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Finding the Fourth Proportional to 268,220.60, 402,330.90 and 81,232.10

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Solution

The fourth proportional to 268,220.60, 402,330.90 and 81,232.10 is: 121,848.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,220.60 : 402,330.90 = 81,232.10 : x
  2. Step 2: Convert to fraction form
    268,220.60/402,330.90 = 81,232.10/x
  3. Step 3: Cross multiply
    268,220.60x = 402,330.90 × 81,232.10
  4. Step 4: Simplify right side
    268,220.60x = 32,682,183,901.89
  5. Step 5: Solve for x
    x = 32,682,183,901.89/268,220.60
  6. Step 6: Final answer
    x = 121,848.15

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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.