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Finding the Fourth Proportional to 499,045.56, 688,699.86 and 272,705.64

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Solution

The fourth proportional to 499,045.56, 688,699.86 and 272,705.64 is: 376,343.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,045.56 : 688,699.86 = 272,705.64 : x
  2. Step 2: Convert to fraction form
    499,045.56/688,699.86 = 272,705.64/x
  3. Step 3: Cross multiply
    499,045.56x = 688,699.86 × 272,705.64
  4. Step 4: Simplify right side
    499,045.56x = 187,812,336,089.21
  5. Step 5: Solve for x
    x = 187,812,336,089.21/499,045.56
  6. Step 6: Final answer
    x = 376,343.07

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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.