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Finding the Fourth Proportional to 478,518.57, 717,780.57 and 123,508.32

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Solution

The fourth proportional to 478,518.57, 717,780.57 and 123,508.32 is: 185,263.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,518.57 : 717,780.57 = 123,508.32 : x
  2. Step 2: Convert to fraction form
    478,518.57/717,780.57 = 123,508.32/x
  3. Step 3: Cross multiply
    478,518.57x = 717,780.57 × 123,508.32
  4. Step 4: Simplify right side
    478,518.57x = 88,651,872,329.34
  5. Step 5: Solve for x
    x = 88,651,872,329.34/478,518.57
  6. Step 6: Final answer
    x = 185,263.18

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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.