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Finding the Fourth Proportional to 356,642.30, 534,668.60 and 278,104.70

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Solution

The fourth proportional to 356,642.30, 534,668.60 and 278,104.70 is: 416,927.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,642.30 : 534,668.60 = 278,104.70 : x
  2. Step 2: Convert to fraction form
    356,642.30/534,668.60 = 278,104.70/x
  3. Step 3: Cross multiply
    356,642.30x = 534,668.60 × 278,104.70
  4. Step 4: Simplify right side
    356,642.30x = 148,693,850,602.42
  5. Step 5: Solve for x
    x = 148,693,850,602.42/356,642.30
  6. Step 6: Final answer
    x = 416,927.13

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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.