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Finding the Fourth Proportional to 426,508.53, 639,949.56 and 202,029.18

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Solution

The fourth proportional to 426,508.53, 639,949.56 and 202,029.18 is: 303,132.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,508.53 : 639,949.56 = 202,029.18 : x
  2. Step 2: Convert to fraction form
    426,508.53/639,949.56 = 202,029.18/x
  3. Step 3: Cross multiply
    426,508.53x = 639,949.56 × 202,029.18
  4. Step 4: Simplify right side
    426,508.53x = 129,288,484,848.16
  5. Step 5: Solve for x
    x = 129,288,484,848.16/426,508.53
  6. Step 6: Final answer
    x = 303,132.24

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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.