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Finding the Fourth Proportional to 229,390.74, 344,008.14 and 87,201.72

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Solution

The fourth proportional to 229,390.74, 344,008.14 and 87,201.72 is: 130,772.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,390.74 : 344,008.14 = 87,201.72 : x
  2. Step 2: Convert to fraction form
    229,390.74/344,008.14 = 87,201.72/x
  3. Step 3: Cross multiply
    229,390.74x = 344,008.14 × 87,201.72
  4. Step 4: Simplify right side
    229,390.74x = 29,998,101,502.00
  5. Step 5: Solve for x
    x = 29,998,101,502.00/229,390.74
  6. Step 6: Final answer
    x = 130,772.94

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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.