Home / 215,938.56-297,988.80-120,443.10

Finding the Fourth Proportional to 215,938.56, 297,988.80 and 120,443.10

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Solution

The fourth proportional to 215,938.56, 297,988.80 and 120,443.10 is: 166,207.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,938.56 : 297,988.80 = 120,443.10 : x
  2. Step 2: Convert to fraction form
    215,938.56/297,988.80 = 120,443.10/x
  3. Step 3: Cross multiply
    215,938.56x = 297,988.80 × 120,443.10
  4. Step 4: Simplify right side
    215,938.56x = 35,890,694,837.28
  5. Step 5: Solve for x
    x = 35,890,694,837.28/215,938.56
  6. Step 6: Final answer
    x = 166,207.90

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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.