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Finding the Fourth Proportional to 489,374.10, 734,061.15 and 312,227.10

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Solution

The fourth proportional to 489,374.10, 734,061.15 and 312,227.10 is: 468,340.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,374.10 : 734,061.15 = 312,227.10 : x
  2. Step 2: Convert to fraction form
    489,374.10/734,061.15 = 312,227.10/x
  3. Step 3: Cross multiply
    489,374.10x = 734,061.15 × 312,227.10
  4. Step 4: Simplify right side
    489,374.10x = 229,193,784,087.17
  5. Step 5: Solve for x
    x = 229,193,784,087.17/489,374.10
  6. Step 6: Final answer
    x = 468,340.65

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Similar ratio
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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.