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Finding the Fourth Proportional to 178,259.20, 267,388.80 and 128,492.80

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Solution

The fourth proportional to 178,259.20, 267,388.80 and 128,492.80 is: 192,739.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,259.20 : 267,388.80 = 128,492.80 : x
  2. Step 2: Convert to fraction form
    178,259.20/267,388.80 = 128,492.80/x
  3. Step 3: Cross multiply
    178,259.20x = 267,388.80 × 128,492.80
  4. Step 4: Simplify right side
    178,259.20x = 34,357,535,600.64
  5. Step 5: Solve for x
    x = 34,357,535,600.64/178,259.20
  6. Step 6: Final answer
    x = 192,739.20

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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.