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Finding the Fourth Proportional to 404,634.20, 606,951.30 and 141,978.20

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Solution

The fourth proportional to 404,634.20, 606,951.30 and 141,978.20 is: 212,967.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,634.20 : 606,951.30 = 141,978.20 : x
  2. Step 2: Convert to fraction form
    404,634.20/606,951.30 = 141,978.20/x
  3. Step 3: Cross multiply
    404,634.20x = 606,951.30 × 141,978.20
  4. Step 4: Simplify right side
    404,634.20x = 86,173,853,061.66
  5. Step 5: Solve for x
    x = 86,173,853,061.66/404,634.20
  6. Step 6: Final answer
    x = 212,967.30

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1.5x scale

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.