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Finding the Fourth Proportional to 381,719.60, 572,813.40 and 157,187.60

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Solution

The fourth proportional to 381,719.60, 572,813.40 and 157,187.60 is: 235,877.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,719.60 : 572,813.40 = 157,187.60 : x
  2. Step 2: Convert to fraction form
    381,719.60/572,813.40 = 157,187.60/x
  3. Step 3: Cross multiply
    381,719.60x = 572,813.40 × 157,187.60
  4. Step 4: Simplify right side
    381,719.60x = 90,039,163,593.84
  5. Step 5: Solve for x
    x = 90,039,163,593.84/381,719.60
  6. Step 6: Final answer
    x = 235,877.76

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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.