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Finding the Fourth Proportional to 306,503.59, 459,157.60 and 172,979.95

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Solution

The fourth proportional to 306,503.59, 459,157.60 and 172,979.95 is: 259,132.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,503.59 : 459,157.60 = 172,979.95 : x
  2. Step 2: Convert to fraction form
    306,503.59/459,157.60 = 172,979.95/x
  3. Step 3: Cross multiply
    306,503.59x = 459,157.60 × 172,979.95
  4. Step 4: Simplify right side
    306,503.59x = 79,425,058,690.12
  5. Step 5: Solve for x
    x = 79,425,058,690.12/306,503.59
  6. Step 6: Final answer
    x = 259,132.56

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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.