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Finding the Fourth Proportional to 425,307.52, 638,086.04 and 125,796

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Solution

The fourth proportional to 425,307.52, 638,086.04 and 125,796 is: 188,730.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,307.52 : 638,086.04 = 125,796 : x
  2. Step 2: Convert to fraction form
    425,307.52/638,086.04 = 125,796/x
  3. Step 3: Cross multiply
    425,307.52x = 638,086.04 × 125,796
  4. Step 4: Simplify right side
    425,307.52x = 80,268,671,487.84
  5. Step 5: Solve for x
    x = 80,268,671,487.84/425,307.52
  6. Step 6: Final answer
    x = 188,730.90

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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.