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Finding the Fourth Proportional to 279,439.60, 419,159.40 and 167,465.20

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Solution

The fourth proportional to 279,439.60, 419,159.40 and 167,465.20 is: 251,197.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,439.60 : 419,159.40 = 167,465.20 : x
  2. Step 2: Convert to fraction form
    279,439.60/419,159.40 = 167,465.20/x
  3. Step 3: Cross multiply
    279,439.60x = 419,159.40 × 167,465.20
  4. Step 4: Simplify right side
    279,439.60x = 70,194,612,752.88
  5. Step 5: Solve for x
    x = 70,194,612,752.88/279,439.60
  6. Step 6: Final answer
    x = 251,197.80

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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.