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Finding the Fourth Proportional to 279,043.60, 418,546.20 and 89,501.20

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Solution

The fourth proportional to 279,043.60, 418,546.20 and 89,501.20 is: 134,245.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,043.60 : 418,546.20 = 89,501.20 : x
  2. Step 2: Convert to fraction form
    279,043.60/418,546.20 = 89,501.20/x
  3. Step 3: Cross multiply
    279,043.60x = 418,546.20 × 89,501.20
  4. Step 4: Simplify right side
    279,043.60x = 37,460,387,155.44
  5. Step 5: Solve for x
    x = 37,460,387,155.44/279,043.60
  6. Step 6: Final answer
    x = 134,245.64

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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.