Home / 215,783.28-297,780.98-120,287.92

Finding the Fourth Proportional to 215,783.28, 297,780.98 and 120,287.92

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Solution

The fourth proportional to 215,783.28, 297,780.98 and 120,287.92 is: 165,997.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,783.28 : 297,780.98 = 120,287.92 : x
  2. Step 2: Convert to fraction form
    215,783.28/297,780.98 = 120,287.92/x
  3. Step 3: Cross multiply
    215,783.28x = 297,780.98 × 120,287.92
  4. Step 4: Simplify right side
    215,783.28x = 35,819,454,699.76
  5. Step 5: Solve for x
    x = 35,819,454,699.76/215,783.28
  6. Step 6: Final answer
    x = 165,997.36

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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.