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Finding the Fourth Proportional to 215,449.40, 297,320.13 and 119,978.61

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Solution

The fourth proportional to 215,449.40, 297,320.13 and 119,978.61 is: 165,570.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,449.40 : 297,320.13 = 119,978.61 : x
  2. Step 2: Convert to fraction form
    215,449.40/297,320.13 = 119,978.61/x
  3. Step 3: Cross multiply
    215,449.40x = 297,320.13 × 119,978.61
  4. Step 4: Simplify right side
    215,449.40x = 35,672,055,922.42
  5. Step 5: Solve for x
    x = 35,672,055,922.42/215,449.40
  6. Step 6: Final answer
    x = 165,570.46

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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.