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Finding the Fourth Proportional to 608,347, 912,520.50 and 165,115

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Solution

The fourth proportional to 608,347, 912,520.50 and 165,115 is: 247,672.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,347 : 912,520.50 = 165,115 : x
  2. Step 2: Convert to fraction form
    608,347/912,520.50 = 165,115/x
  3. Step 3: Cross multiply
    608,347x = 912,520.50 × 165,115
  4. Step 4: Simplify right side
    608,347x = 150,670,822,357.50
  5. Step 5: Solve for x
    x = 150,670,822,357.50/608,347
  6. Step 6: Final answer
    x = 247,672.50

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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.