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Finding the Fourth Proportional to 237,961.50, 328,386.90 and 137,359.50

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Solution

The fourth proportional to 237,961.50, 328,386.90 and 137,359.50 is: 189,556.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    237,961.50 : 328,386.90 = 137,359.50 : x
  2. Step 2: Convert to fraction form
    237,961.50/328,386.90 = 137,359.50/x
  3. Step 3: Cross multiply
    237,961.50x = 328,386.90 × 137,359.50
  4. Step 4: Simplify right side
    237,961.50x = 45,107,060,390.55
  5. Step 5: Solve for x
    x = 45,107,060,390.55/237,961.50
  6. Step 6: Final answer
    x = 189,556.13

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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.