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Finding the Fourth Proportional to 653,912.10, 980,139.15 and 254,420.10

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Solution

The fourth proportional to 653,912.10, 980,139.15 and 254,420.10 is: 381,346.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,912.10 : 980,139.15 = 254,420.10 : x
  2. Step 2: Convert to fraction form
    653,912.10/980,139.15 = 254,420.10/x
  3. Step 3: Cross multiply
    653,912.10x = 980,139.15 × 254,420.10
  4. Step 4: Simplify right side
    653,912.10x = 249,367,100,556.92
  5. Step 5: Solve for x
    x = 249,367,100,556.92/653,912.10
  6. Step 6: Final answer
    x = 381,346.52

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1.5x scale

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.