Home / 272,444.28-408,735.54-85,457.40

Finding the Fourth Proportional to 272,444.28, 408,735.54 and 85,457.40

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Solution

The fourth proportional to 272,444.28, 408,735.54 and 85,457.40 is: 128,207.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,444.28 : 408,735.54 = 85,457.40 : x
  2. Step 2: Convert to fraction form
    272,444.28/408,735.54 = 85,457.40/x
  3. Step 3: Cross multiply
    272,444.28x = 408,735.54 × 85,457.40
  4. Step 4: Simplify right side
    272,444.28x = 34,929,476,536.00
  5. Step 5: Solve for x
    x = 34,929,476,536.00/272,444.28
  6. Step 6: Final answer
    x = 128,207.78

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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.