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Finding the Fourth Proportional to 279,478.80, 419,218.20 and 236,176.20

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Solution

The fourth proportional to 279,478.80, 419,218.20 and 236,176.20 is: 354,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,478.80 : 419,218.20 = 236,176.20 : x
  2. Step 2: Convert to fraction form
    279,478.80/419,218.20 = 236,176.20/x
  3. Step 3: Cross multiply
    279,478.80x = 419,218.20 × 236,176.20
  4. Step 4: Simplify right side
    279,478.80x = 99,009,361,446.84
  5. Step 5: Solve for x
    x = 99,009,361,446.84/279,478.80
  6. Step 6: Final answer
    x = 354,264.30

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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.