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Finding the Fourth Proportional to 489,248.60, 733,872.90 and 312,101.60

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Solution

The fourth proportional to 489,248.60, 733,872.90 and 312,101.60 is: 468,152.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,248.60 : 733,872.90 = 312,101.60 : x
  2. Step 2: Convert to fraction form
    489,248.60/733,872.90 = 312,101.60/x
  3. Step 3: Cross multiply
    489,248.60x = 733,872.90 × 312,101.60
  4. Step 4: Simplify right side
    489,248.60x = 229,042,906,286.64
  5. Step 5: Solve for x
    x = 229,042,906,286.64/489,248.60
  6. Step 6: Final answer
    x = 468,152.40

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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.