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Finding the Fourth Proportional to 370,472.43, 555,708.65 and 89,987.79

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Solution

The fourth proportional to 370,472.43, 555,708.65 and 89,987.79 is: 134,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,472.43 : 555,708.65 = 89,987.79 : x
  2. Step 2: Convert to fraction form
    370,472.43/555,708.65 = 89,987.79/x
  3. Step 3: Cross multiply
    370,472.43x = 555,708.65 × 89,987.79
  4. Step 4: Simplify right side
    370,472.43x = 50,006,992,847.44
  5. Step 5: Solve for x
    x = 50,006,992,847.44/370,472.43
  6. Step 6: Final answer
    x = 134,981.69

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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.