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Finding the Fourth Proportional to 539,149.90, 808,586.40 and 159,980.94

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Solution

The fourth proportional to 539,149.90, 808,586.40 and 159,980.94 is: 239,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,149.90 : 808,586.40 = 159,980.94 : x
  2. Step 2: Convert to fraction form
    539,149.90/808,586.40 = 159,980.94/x
  3. Step 3: Cross multiply
    539,149.90x = 808,586.40 × 159,980.94
  4. Step 4: Simplify right side
    539,149.90x = 129,358,412,343.22
  5. Step 5: Solve for x
    x = 129,358,412,343.22/539,149.90
  6. Step 6: Final answer
    x = 239,930.33

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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.