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Finding the Fourth Proportional to 475,987.28, 713,008.92 and 265,737.20

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Solution

The fourth proportional to 475,987.28, 713,008.92 and 265,737.20 is: 398,063.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,987.28 : 713,008.92 = 265,737.20 : x
  2. Step 2: Convert to fraction form
    475,987.28/713,008.92 = 265,737.20/x
  3. Step 3: Cross multiply
    475,987.28x = 713,008.92 × 265,737.20
  4. Step 4: Simplify right side
    475,987.28x = 189,472,993,975.82
  5. Step 5: Solve for x
    x = 189,472,993,975.82/475,987.28
  6. Step 6: Final answer
    x = 398,063.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.