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Finding the Fourth Proportional to 492,251.68, 679,476.08 and 288,368

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Solution

The fourth proportional to 492,251.68, 679,476.08 and 288,368 is: 398,046.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,251.68 : 679,476.08 = 288,368 : x
  2. Step 2: Convert to fraction form
    492,251.68/679,476.08 = 288,368/x
  3. Step 3: Cross multiply
    492,251.68x = 679,476.08 × 288,368
  4. Step 4: Simplify right side
    492,251.68x = 195,939,158,237.44
  5. Step 5: Solve for x
    x = 195,939,158,237.44/492,251.68
  6. Step 6: Final answer
    x = 398,046.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.