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Finding the Fourth Proportional to 508,825.40, 763,265.09 and 153,830.36

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Solution

The fourth proportional to 508,825.40, 763,265.09 and 153,830.36 is: 230,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,825.40 : 763,265.09 = 153,830.36 : x
  2. Step 2: Convert to fraction form
    508,825.40/763,265.09 = 153,830.36/x
  3. Step 3: Cross multiply
    508,825.40x = 763,265.09 × 153,830.36
  4. Step 4: Simplify right side
    508,825.40x = 117,413,340,138.38
  5. Step 5: Solve for x
    x = 117,413,340,138.38/508,825.40
  6. Step 6: Final answer
    x = 230,753.70

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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.