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Finding the Fourth Proportional to 359,419.70, 495,981.50 and 216,151.94

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Solution

The fourth proportional to 359,419.70, 495,981.50 and 216,151.94 is: 298,279.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,419.70 : 495,981.50 = 216,151.94 : x
  2. Step 2: Convert to fraction form
    359,419.70/495,981.50 = 216,151.94/x
  3. Step 3: Cross multiply
    359,419.70x = 495,981.50 × 216,151.94
  4. Step 4: Simplify right side
    359,419.70x = 107,207,363,429.11
  5. Step 5: Solve for x
    x = 107,207,363,429.11/359,419.70
  6. Step 6: Final answer
    x = 298,279.04

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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.