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Finding the Fourth Proportional to 359,417.70, 495,978.75 and 216,149.94

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Solution

The fourth proportional to 359,417.70, 495,978.75 and 216,149.94 is: 298,276.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,417.70 : 495,978.75 = 216,149.94 : x
  2. Step 2: Convert to fraction form
    359,417.70/495,978.75 = 216,149.94/x
  3. Step 3: Cross multiply
    359,417.70x = 495,978.75 × 216,149.94
  4. Step 4: Simplify right side
    359,417.70x = 107,205,777,053.78
  5. Step 5: Solve for x
    x = 107,205,777,053.78/359,417.70
  6. Step 6: Final answer
    x = 298,276.29

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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.