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Finding the Fourth Proportional to 370,520.40, 555,765.12 and 157,229.76

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Solution

The fourth proportional to 370,520.40, 555,765.12 and 157,229.76 is: 235,838.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,520.40 : 555,765.12 = 157,229.76 : x
  2. Step 2: Convert to fraction form
    370,520.40/555,765.12 = 157,229.76/x
  3. Step 3: Cross multiply
    370,520.40x = 555,765.12 × 157,229.76
  4. Step 4: Simplify right side
    370,520.40x = 87,382,816,433.97
  5. Step 5: Solve for x
    x = 87,382,816,433.97/370,520.40
  6. Step 6: Final answer
    x = 235,838.07

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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.