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Finding the Fourth Proportional to 487,227.60, 730,582.20 and 206,427.60

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Solution

The fourth proportional to 487,227.60, 730,582.20 and 206,427.60 is: 309,531.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,227.60 : 730,582.20 = 206,427.60 : x
  2. Step 2: Convert to fraction form
    487,227.60/730,582.20 = 206,427.60/x
  3. Step 3: Cross multiply
    487,227.60x = 730,582.20 × 206,427.60
  4. Step 4: Simplify right side
    487,227.60x = 150,812,330,148.72
  5. Step 5: Solve for x
    x = 150,812,330,148.72/487,227.60
  6. Step 6: Final answer
    x = 309,531.58

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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.