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Finding the Fourth Proportional to 399,095.44, 550,821.96 and 237,960.40

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Solution

The fourth proportional to 399,095.44, 550,821.96 and 237,960.40 is: 328,427.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,095.44 : 550,821.96 = 237,960.40 : x
  2. Step 2: Convert to fraction form
    399,095.44/550,821.96 = 237,960.40/x
  3. Step 3: Cross multiply
    399,095.44x = 550,821.96 × 237,960.40
  4. Step 4: Simplify right side
    399,095.44x = 131,073,813,930.38
  5. Step 5: Solve for x
    x = 131,073,813,930.38/399,095.44
  6. Step 6: Final answer
    x = 328,427.24

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1.5x scale

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.