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Finding the Fourth Proportional to 499,130.80, 688,800.88 and 272,776.32

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Solution

The fourth proportional to 499,130.80, 688,800.88 and 272,776.32 is: 376,431.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,130.80 : 688,800.88 = 272,776.32 : x
  2. Step 2: Convert to fraction form
    499,130.80/688,800.88 = 272,776.32/x
  3. Step 3: Cross multiply
    499,130.80x = 688,800.88 × 272,776.32
  4. Step 4: Simplify right side
    499,130.80x = 187,888,569,259.16
  5. Step 5: Solve for x
    x = 187,888,569,259.16/499,130.80
  6. Step 6: Final answer
    x = 376,431.53

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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.