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Finding the Fourth Proportional to 398,985.72, 550,611.18 and 237,854.04

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Solution

The fourth proportional to 398,985.72, 550,611.18 and 237,854.04 is: 328,245.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,985.72 : 550,611.18 = 237,854.04 : x
  2. Step 2: Convert to fraction form
    398,985.72/550,611.18 = 237,854.04/x
  3. Step 3: Cross multiply
    398,985.72x = 550,611.18 × 237,854.04
  4. Step 4: Simplify right side
    398,985.72x = 130,965,093,632.17
  5. Step 5: Solve for x
    x = 130,965,093,632.17/398,985.72
  6. Step 6: Final answer
    x = 328,245.07

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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.