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Finding the Fourth Proportional to 347,139.73, 521,005.47 and 136,925.29

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Solution

The fourth proportional to 347,139.73, 521,005.47 and 136,925.29 is: 205,504.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,139.73 : 521,005.47 = 136,925.29 : x
  2. Step 2: Convert to fraction form
    347,139.73/521,005.47 = 136,925.29/x
  3. Step 3: Cross multiply
    347,139.73x = 521,005.47 × 136,925.29
  4. Step 4: Simplify right side
    347,139.73x = 71,338,825,071.34
  5. Step 5: Solve for x
    x = 71,338,825,071.34/347,139.73
  6. Step 6: Final answer
    x = 205,504.64

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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.