Home / 380,890,100,391.71-525,628,424,337.70-209,612,031,881.22

Finding the Fourth Proportional to 380,890,100,391.71, 525,628,424,337.70 and 209,612,031,881.22

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Solution

The fourth proportional to 380,890,100,391.71, 525,628,424,337.70 and 209,612,031,881.22 is: 289,264,651,212.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,890,100,391.71 : 525,628,424,337.70 = 209,612,031,881.22 : x
  2. Step 2: Convert to fraction form
    380,890,100,391.71/525,628,424,337.70 = 209,612,031,881.22/x
  3. Step 3: Cross multiply
    380,890,100,391.71x = 525,628,424,337.70 × 209,612,031,881.22
  4. Step 4: Simplify right side
    380,890,100,391.71x = 110,178,042,039,949,405,978,624
  5. Step 5: Solve for x
    x = 110,178,042,039,949,405,978,624/380,890,100,391.71
  6. Step 6: Final answer
    x = 289,264,651,212.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.