Home / 381,719.80-572,798.40-145,232.20

Finding the Fourth Proportional to 381,719.80, 572,798.40 and 145,232.20

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Solution

The fourth proportional to 381,719.80, 572,798.40 and 145,232.20 is: 217,931.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,719.80 : 572,798.40 = 145,232.20 : x
  2. Step 2: Convert to fraction form
    381,719.80/572,798.40 = 145,232.20/x
  3. Step 3: Cross multiply
    381,719.80x = 572,798.40 × 145,232.20
  4. Step 4: Simplify right side
    381,719.80x = 83,188,771,788.48
  5. Step 5: Solve for x
    x = 83,188,771,788.48/381,719.80
  6. Step 6: Final answer
    x = 217,931.51

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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.