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Finding the Fourth Proportional to 555,211.20, 832,692 and 255,403.92

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Solution

The fourth proportional to 555,211.20, 832,692 and 255,403.92 is: 383,048.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,211.20 : 832,692 = 255,403.92 : x
  2. Step 2: Convert to fraction form
    555,211.20/832,692 = 255,403.92/x
  3. Step 3: Cross multiply
    555,211.20x = 832,692 × 255,403.92
  4. Step 4: Simplify right side
    555,211.20x = 212,672,800,952.64
  5. Step 5: Solve for x
    x = 212,672,800,952.64/555,211.20
  6. Step 6: Final answer
    x = 383,048.47

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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.