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Finding the Fourth Proportional to 498,405.14, 687,798.91 and 272,050.64

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Solution

The fourth proportional to 498,405.14, 687,798.91 and 272,050.64 is: 375,429.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,405.14 : 687,798.91 = 272,050.64 : x
  2. Step 2: Convert to fraction form
    498,405.14/687,798.91 = 272,050.64/x
  3. Step 3: Cross multiply
    498,405.14x = 687,798.91 × 272,050.64
  4. Step 4: Simplify right side
    498,405.14x = 187,116,133,656.80
  5. Step 5: Solve for x
    x = 187,116,133,656.80/498,405.14
  6. Step 6: Final answer
    x = 375,429.78

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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.