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Finding the Fourth Proportional to 361,666.80, 541,981.80 and 266,151.60

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Solution

The fourth proportional to 361,666.80, 541,981.80 and 266,151.60 is: 398,845.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,666.80 : 541,981.80 = 266,151.60 : x
  2. Step 2: Convert to fraction form
    361,666.80/541,981.80 = 266,151.60/x
  3. Step 3: Cross multiply
    361,666.80x = 541,981.80 × 266,151.60
  4. Step 4: Simplify right side
    361,666.80x = 144,249,323,240.88
  5. Step 5: Solve for x
    x = 144,249,323,240.88/361,666.80
  6. Step 6: Final answer
    x = 398,845.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.