Home / 272,600.76-408,967.02-85,612.26

Finding the Fourth Proportional to 272,600.76, 408,967.02 and 85,612.26

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Solution

The fourth proportional to 272,600.76, 408,967.02 and 85,612.26 is: 128,439.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,600.76 : 408,967.02 = 85,612.26 : x
  2. Step 2: Convert to fraction form
    272,600.76/408,967.02 = 85,612.26/x
  3. Step 3: Cross multiply
    272,600.76x = 408,967.02 × 85,612.26
  4. Step 4: Simplify right side
    272,600.76x = 35,012,590,847.67
  5. Step 5: Solve for x
    x = 35,012,590,847.67/272,600.76
  6. Step 6: Final answer
    x = 128,439.08

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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.