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Finding the Fourth Proportional to 499,117.56, 688,780.71 and 272,763.06

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Solution

The fourth proportional to 499,117.56, 688,780.71 and 272,763.06 is: 376,412.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,117.56 : 688,780.71 = 272,763.06 : x
  2. Step 2: Convert to fraction form
    499,117.56/688,780.71 = 272,763.06/x
  3. Step 3: Cross multiply
    499,117.56x = 688,780.71 × 272,763.06
  4. Step 4: Simplify right side
    499,117.56x = 187,873,934,128.57
  5. Step 5: Solve for x
    x = 187,873,934,128.57/499,117.56
  6. Step 6: Final answer
    x = 376,412.19

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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.