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Finding the Fourth Proportional to 398,806.80, 597,969.36 and 158,957.70

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Solution

The fourth proportional to 398,806.80, 597,969.36 and 158,957.70 is: 238,340.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,806.80 : 597,969.36 = 158,957.70 : x
  2. Step 2: Convert to fraction form
    398,806.80/597,969.36 = 158,957.70/x
  3. Step 3: Cross multiply
    398,806.80x = 597,969.36 × 158,957.70
  4. Step 4: Simplify right side
    398,806.80x = 95,051,834,136.07
  5. Step 5: Solve for x
    x = 95,051,834,136.07/398,806.80
  6. Step 6: Final answer
    x = 238,340.56

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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.