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Finding the Fourth Proportional to 425,597.02, 638,494.89 and 145,114.54

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Solution

The fourth proportional to 425,597.02, 638,494.89 and 145,114.54 is: 217,705.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,597.02 : 638,494.89 = 145,114.54 : x
  2. Step 2: Convert to fraction form
    425,597.02/638,494.89 = 145,114.54/x
  3. Step 3: Cross multiply
    425,597.02x = 638,494.89 × 145,114.54
  4. Step 4: Simplify right side
    425,597.02x = 92,654,892,254.70
  5. Step 5: Solve for x
    x = 92,654,892,254.70/425,597.02
  6. Step 6: Final answer
    x = 217,705.69

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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.