Home / 385,561,011.49-532,074,825.81-209,349,347.65

Finding the Fourth Proportional to 385,561,011.49, 532,074,825.81 and 209,349,347.65

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Solution

The fourth proportional to 385,561,011.49, 532,074,825.81 and 209,349,347.65 is: 288,902,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,561,011.49 : 532,074,825.81 = 209,349,347.65 : x
  2. Step 2: Convert to fraction form
    385,561,011.49/532,074,825.81 = 209,349,347.65/x
  3. Step 3: Cross multiply
    385,561,011.49x = 532,074,825.81 × 209,349,347.65
  4. Step 4: Simplify right side
    385,561,011.49x = 111,389,517,682,980,704
  5. Step 5: Solve for x
    x = 111,389,517,682,980,704/385,561,011.49
  6. Step 6: Final answer
    x = 288,902,441.80

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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.