Home / 399,130.85-598,871.57-209,547.17

Finding the Fourth Proportional to 399,130.85, 598,871.57 and 209,547.17

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Solution

The fourth proportional to 399,130.85, 598,871.57 and 209,547.17 is: 314,412.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,130.85 : 598,871.57 = 209,547.17 : x
  2. Step 2: Convert to fraction form
    399,130.85/598,871.57 = 209,547.17/x
  3. Step 3: Cross multiply
    399,130.85x = 598,871.57 × 209,547.17
  4. Step 4: Simplify right side
    399,130.85x = 125,491,838,644.86
  5. Step 5: Solve for x
    x = 125,491,838,644.86/399,130.85
  6. Step 6: Final answer
    x = 314,412.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.