Home / 380,744.03-525,426.76-210,978.16

Finding the Fourth Proportional to 380,744.03, 525,426.76 and 210,978.16

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Solution

The fourth proportional to 380,744.03, 525,426.76 and 210,978.16 is: 291,149.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,744.03 : 525,426.76 = 210,978.16 : x
  2. Step 2: Convert to fraction form
    380,744.03/525,426.76 = 210,978.16/x
  3. Step 3: Cross multiply
    380,744.03x = 525,426.76 × 210,978.16
  4. Step 4: Simplify right side
    380,744.03x = 110,853,571,039.56
  5. Step 5: Solve for x
    x = 110,853,571,039.56/380,744.03
  6. Step 6: Final answer
    x = 291,149.86

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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.