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Finding the Fourth Proportional to 539,149.83, 808,586.31 and 159,980.91

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Solution

The fourth proportional to 539,149.83, 808,586.31 and 159,980.91 is: 239,930.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,149.83 : 808,586.31 = 159,980.91 : x
  2. Step 2: Convert to fraction form
    539,149.83/808,586.31 = 159,980.91/x
  3. Step 3: Cross multiply
    539,149.83x = 808,586.31 × 159,980.91
  4. Step 4: Simplify right side
    539,149.83x = 129,358,373,687.34
  5. Step 5: Solve for x
    x = 129,358,373,687.34/539,149.83
  6. Step 6: Final answer
    x = 239,930.29

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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.