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Finding the Fourth Proportional to 398,657.30, 550,280.38 and 237,562.88

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Solution

The fourth proportional to 398,657.30, 550,280.38 and 237,562.88 is: 327,916.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,657.30 : 550,280.38 = 237,562.88 : x
  2. Step 2: Convert to fraction form
    398,657.30/550,280.38 = 237,562.88/x
  3. Step 3: Cross multiply
    398,657.30x = 550,280.38 × 237,562.88
  4. Step 4: Simplify right side
    398,657.30x = 130,726,191,880.29
  5. Step 5: Solve for x
    x = 130,726,191,880.29/398,657.30
  6. Step 6: Final answer
    x = 327,916.21

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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.