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Finding the Fourth Proportional to 425,753.96, 638,646.02 and 105,907.48

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Solution

The fourth proportional to 425,753.96, 638,646.02 and 105,907.48 is: 158,864.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,753.96 : 638,646.02 = 105,907.48 : x
  2. Step 2: Convert to fraction form
    425,753.96/638,646.02 = 105,907.48/x
  3. Step 3: Cross multiply
    425,753.96x = 638,646.02 × 105,907.48
  4. Step 4: Simplify right side
    425,753.96x = 67,637,392,453.61
  5. Step 5: Solve for x
    x = 67,637,392,453.61/425,753.96
  6. Step 6: Final answer
    x = 158,864.98

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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.