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Finding the Fourth Proportional to 608,407.66, 912,541.76 and 159,171.88

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Solution

The fourth proportional to 608,407.66, 912,541.76 and 159,171.88 is: 238,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,407.66 : 912,541.76 = 159,171.88 : x
  2. Step 2: Convert to fraction form
    608,407.66/912,541.76 = 159,171.88/x
  3. Step 3: Cross multiply
    608,407.66x = 912,541.76 × 159,171.88
  4. Step 4: Simplify right side
    608,407.66x = 145,250,987,517.71
  5. Step 5: Solve for x
    x = 145,250,987,517.71/608,407.66
  6. Step 6: Final answer
    x = 238,739.58

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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.