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Finding the Fourth Proportional to 279,931.60, 419,897.40 and 167,957.20

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Solution

The fourth proportional to 279,931.60, 419,897.40 and 167,957.20 is: 251,935.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,931.60 : 419,897.40 = 167,957.20 : x
  2. Step 2: Convert to fraction form
    279,931.60/419,897.40 = 167,957.20/x
  3. Step 3: Cross multiply
    279,931.60x = 419,897.40 × 167,957.20
  4. Step 4: Simplify right side
    279,931.60x = 70,524,791,591.28
  5. Step 5: Solve for x
    x = 70,524,791,591.28/279,931.60
  6. Step 6: Final answer
    x = 251,935.80

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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.