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Finding the Fourth Proportional to 499,116.82, 688,781.50 and 272,762.32

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Solution

The fourth proportional to 499,116.82, 688,781.50 and 272,762.32 is: 376,412.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,116.82 : 688,781.50 = 272,762.32 : x
  2. Step 2: Convert to fraction form
    499,116.82/688,781.50 = 272,762.32/x
  3. Step 3: Cross multiply
    499,116.82x = 688,781.50 × 272,762.32
  4. Step 4: Simplify right side
    499,116.82x = 187,873,639,913.08
  5. Step 5: Solve for x
    x = 187,873,639,913.08/499,116.82
  6. Step 6: Final answer
    x = 376,412.16

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1.5x scale

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.