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Finding the Fourth Proportional to 478,005.46, 717,131.21 and 141,032.50

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Solution

The fourth proportional to 478,005.46, 717,131.21 and 141,032.50 is: 211,585.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,005.46 : 717,131.21 = 141,032.50 : x
  2. Step 2: Convert to fraction form
    478,005.46/717,131.21 = 141,032.50/x
  3. Step 3: Cross multiply
    478,005.46x = 717,131.21 × 141,032.50
  4. Step 4: Simplify right side
    478,005.46x = 101,138,804,876.33
  5. Step 5: Solve for x
    x = 101,138,804,876.33/478,005.46
  6. Step 6: Final answer
    x = 211,585.04

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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.