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Finding the Fourth Proportional to 407,787.04, 612,054.15 and 218,461.15

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Solution

The fourth proportional to 407,787.04, 612,054.15 and 218,461.15 is: 327,891.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,787.04 : 612,054.15 = 218,461.15 : x
  2. Step 2: Convert to fraction form
    407,787.04/612,054.15 = 218,461.15/x
  3. Step 3: Cross multiply
    407,787.04x = 612,054.15 × 218,461.15
  4. Step 4: Simplify right side
    407,787.04x = 133,710,053,471.27
  5. Step 5: Solve for x
    x = 133,710,053,471.27/407,787.04
  6. Step 6: Final answer
    x = 327,891.87

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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.