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Finding the Fourth Proportional to 425,086.12, 637,713.26 and 121,483

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Solution

The fourth proportional to 425,086.12, 637,713.26 and 121,483 is: 182,248.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,086.12 : 637,713.26 = 121,483 : x
  2. Step 2: Convert to fraction form
    425,086.12/637,713.26 = 121,483/x
  3. Step 3: Cross multiply
    425,086.12x = 637,713.26 × 121,483
  4. Step 4: Simplify right side
    425,086.12x = 77,471,319,964.58
  5. Step 5: Solve for x
    x = 77,471,319,964.58/425,086.12
  6. Step 6: Final answer
    x = 182,248.53

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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.