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Finding the Fourth Proportional to 539,672.80, 809,509.20 and 165,647.20

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Solution

The fourth proportional to 539,672.80, 809,509.20 and 165,647.20 is: 248,470.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,672.80 : 809,509.20 = 165,647.20 : x
  2. Step 2: Convert to fraction form
    539,672.80/809,509.20 = 165,647.20/x
  3. Step 3: Cross multiply
    539,672.80x = 809,509.20 × 165,647.20
  4. Step 4: Simplify right side
    539,672.80x = 134,092,932,354.24
  5. Step 5: Solve for x
    x = 134,092,932,354.24/539,672.80
  6. Step 6: Final answer
    x = 248,470.80

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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.