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Finding the Fourth Proportional to 279,070.60, 418,586.70 and 89,528.20

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Solution

The fourth proportional to 279,070.60, 418,586.70 and 89,528.20 is: 134,286.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,070.60 : 418,586.70 = 89,528.20 : x
  2. Step 2: Convert to fraction form
    279,070.60/418,586.70 = 89,528.20/x
  3. Step 3: Cross multiply
    279,070.60x = 418,586.70 × 89,528.20
  4. Step 4: Simplify right side
    279,070.60x = 37,475,313,794.94
  5. Step 5: Solve for x
    x = 37,475,313,794.94/279,070.60
  6. Step 6: Final answer
    x = 134,286.14

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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.