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Finding the Fourth Proportional to 478,077.88, 717,169.36 and 158,113.20

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Solution

The fourth proportional to 478,077.88, 717,169.36 and 158,113.20 is: 237,187.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,077.88 : 717,169.36 = 158,113.20 : x
  2. Step 2: Convert to fraction form
    478,077.88/717,169.36 = 158,113.20/x
  3. Step 3: Cross multiply
    478,077.88x = 717,169.36 × 158,113.20
  4. Step 4: Simplify right side
    478,077.88x = 113,393,942,451.55
  5. Step 5: Solve for x
    x = 113,393,942,451.55/478,077.88
  6. Step 6: Final answer
    x = 237,187.18

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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.