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Finding the Fourth Proportional to 415,308.87, 622,525.91 and 215,417.07

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Solution

The fourth proportional to 415,308.87, 622,525.91 and 215,417.07 is: 322,898.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,308.87 : 622,525.91 = 215,417.07 : x
  2. Step 2: Convert to fraction form
    415,308.87/622,525.91 = 215,417.07/x
  3. Step 3: Cross multiply
    415,308.87x = 622,525.91 × 215,417.07
  4. Step 4: Simplify right side
    415,308.87x = 134,102,706,454.20
  5. Step 5: Solve for x
    x = 134,102,706,454.20/415,308.87
  6. Step 6: Final answer
    x = 322,898.73

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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.