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Finding the Fourth Proportional to 317,503.32, 438,154 and 181,539.82

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Solution

The fourth proportional to 317,503.32, 438,154 and 181,539.82 is: 250,524.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,503.32 : 438,154 = 181,539.82 : x
  2. Step 2: Convert to fraction form
    317,503.32/438,154 = 181,539.82/x
  3. Step 3: Cross multiply
    317,503.32x = 438,154 × 181,539.82
  4. Step 4: Simplify right side
    317,503.32x = 79,542,398,292.28
  5. Step 5: Solve for x
    x = 79,542,398,292.28/317,503.32
  6. Step 6: Final answer
    x = 250,524.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.