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Finding the Fourth Proportional to 608,408.47, 912,542.98 and 159,172.69

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Solution

The fourth proportional to 608,408.47, 912,542.98 and 159,172.69 is: 238,740.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,408.47 : 912,542.98 = 159,172.69 : x
  2. Step 2: Convert to fraction form
    608,408.47/912,542.98 = 159,172.69/x
  3. Step 3: Cross multiply
    608,408.47x = 912,542.98 × 159,172.69
  4. Step 4: Simplify right side
    608,408.47x = 145,251,920,867.22
  5. Step 5: Solve for x
    x = 145,251,920,867.22/608,408.47
  6. Step 6: Final answer
    x = 238,740.79

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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.