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Finding the Fourth Proportional to 371,997.60, 558,142.20 and 135,364.20

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Solution

The fourth proportional to 371,997.60, 558,142.20 and 135,364.20 is: 203,099.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,997.60 : 558,142.20 = 135,364.20 : x
  2. Step 2: Convert to fraction form
    371,997.60/558,142.20 = 135,364.20/x
  3. Step 3: Cross multiply
    371,997.60x = 558,142.20 × 135,364.20
  4. Step 4: Simplify right side
    371,997.60x = 75,552,472,389.24
  5. Step 5: Solve for x
    x = 75,552,472,389.24/371,997.60
  6. Step 6: Final answer
    x = 203,099.35

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1.5x scale

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.