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Finding the Fourth Proportional to 653,756.80, 980,440.80 and 254,167.60

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Solution

The fourth proportional to 653,756.80, 980,440.80 and 254,167.60 is: 381,175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,756.80 : 980,440.80 = 254,167.60 : x
  2. Step 2: Convert to fraction form
    653,756.80/980,440.80 = 254,167.60/x
  3. Step 3: Cross multiply
    653,756.80x = 980,440.80 × 254,167.60
  4. Step 4: Simplify right side
    653,756.80x = 249,196,285,078.08
  5. Step 5: Solve for x
    x = 249,196,285,078.08/653,756.80
  6. Step 6: Final answer
    x = 381,175.82

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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.