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Finding the Fourth Proportional to 374,574.87, 561,599.46 and 137,887.20

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Solution

The fourth proportional to 374,574.87, 561,599.46 and 137,887.20 is: 206,734.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,574.87 : 561,599.46 = 137,887.20 : x
  2. Step 2: Convert to fraction form
    374,574.87/561,599.46 = 137,887.20/x
  3. Step 3: Cross multiply
    374,574.87x = 561,599.46 × 137,887.20
  4. Step 4: Simplify right side
    374,574.87x = 77,437,377,060.91
  5. Step 5: Solve for x
    x = 77,437,377,060.91/374,574.87
  6. Step 6: Final answer
    x = 206,734.04

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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.