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Finding the Fourth Proportional to 478,164.52, 717,077.88 and 141,115

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Solution

The fourth proportional to 478,164.52, 717,077.88 and 141,115 is: 211,622.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,164.52 : 717,077.88 = 141,115 : x
  2. Step 2: Convert to fraction form
    478,164.52/717,077.88 = 141,115/x
  3. Step 3: Cross multiply
    478,164.52x = 717,077.88 × 141,115
  4. Step 4: Simplify right side
    478,164.52x = 101,190,445,036.20
  5. Step 5: Solve for x
    x = 101,190,445,036.20/478,164.52
  6. Step 6: Final answer
    x = 211,622.65

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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.