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Finding the Fourth Proportional to 359,417.70, 495,990.27 and 198,288.18

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Solution

The fourth proportional to 359,417.70, 495,990.27 and 198,288.18 is: 273,634.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,417.70 : 495,990.27 = 198,288.18 : x
  2. Step 2: Convert to fraction form
    359,417.70/495,990.27 = 198,288.18/x
  3. Step 3: Cross multiply
    359,417.70x = 495,990.27 × 198,288.18
  4. Step 4: Simplify right side
    359,417.70x = 98,349,007,936.01
  5. Step 5: Solve for x
    x = 98,349,007,936.01/359,417.70
  6. Step 6: Final answer
    x = 273,634.29

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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.