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Finding the Fourth Proportional to 374,428.20, 561,644.70 and 149,807.40

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Solution

The fourth proportional to 374,428.20, 561,644.70 and 149,807.40 is: 224,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,428.20 : 561,644.70 = 149,807.40 : x
  2. Step 2: Convert to fraction form
    374,428.20/561,644.70 = 149,807.40/x
  3. Step 3: Cross multiply
    374,428.20x = 561,644.70 × 149,807.40
  4. Step 4: Simplify right side
    374,428.20x = 84,138,532,230.78
  5. Step 5: Solve for x
    x = 84,138,532,230.78/374,428.20
  6. Step 6: Final answer
    x = 224,712.06

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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.