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Finding the Fourth Proportional to 653,920.60, 980,151.90 and 254,428.60

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Solution

The fourth proportional to 653,920.60, 980,151.90 and 254,428.60 is: 381,359.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,920.60 : 980,151.90 = 254,428.60 : x
  2. Step 2: Convert to fraction form
    653,920.60/980,151.90 = 254,428.60/x
  3. Step 3: Cross multiply
    653,920.60x = 980,151.90 × 254,428.60
  4. Step 4: Simplify right side
    653,920.60x = 249,378,675,704.34
  5. Step 5: Solve for x
    x = 249,378,675,704.34/653,920.60
  6. Step 6: Final answer
    x = 381,359.26

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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.