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Finding the Fourth Proportional to 653,539.80, 980,370.12 and 254,210.88

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Solution

The fourth proportional to 653,539.80, 980,370.12 and 254,210.88 is: 381,339.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,539.80 : 980,370.12 = 254,210.88 : x
  2. Step 2: Convert to fraction form
    653,539.80/980,370.12 = 254,210.88/x
  3. Step 3: Cross multiply
    653,539.80x = 980,370.12 × 254,210.88
  4. Step 4: Simplify right side
    653,539.80x = 249,220,750,930.91
  5. Step 5: Solve for x
    x = 249,220,750,930.91/653,539.80
  6. Step 6: Final answer
    x = 381,339.82

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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.