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Finding the Fourth Proportional to 359,128.87, 495,601.66 and 197,989.69

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Solution

The fourth proportional to 359,128.87, 495,601.66 and 197,989.69 is: 273,227.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,128.87 : 495,601.66 = 197,989.69 : x
  2. Step 2: Convert to fraction form
    359,128.87/495,601.66 = 197,989.69/x
  3. Step 3: Cross multiply
    359,128.87x = 495,601.66 × 197,989.69
  4. Step 4: Simplify right side
    359,128.87x = 98,124,020,915.35
  5. Step 5: Solve for x
    x = 98,124,020,915.35/359,128.87
  6. Step 6: Final answer
    x = 273,227.88

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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.