Home / 272,934.30-409,459.05-85,964.70

Finding the Fourth Proportional to 272,934.30, 409,459.05 and 85,964.70

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Solution

The fourth proportional to 272,934.30, 409,459.05 and 85,964.70 is: 128,965.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,934.30 : 409,459.05 = 85,964.70 : x
  2. Step 2: Convert to fraction form
    272,934.30/409,459.05 = 85,964.70/x
  3. Step 3: Cross multiply
    272,934.30x = 409,459.05 × 85,964.70
  4. Step 4: Simplify right side
    272,934.30x = 35,199,024,395.54
  5. Step 5: Solve for x
    x = 35,199,024,395.54/272,934.30
  6. Step 6: Final answer
    x = 128,965.19

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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.