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Finding the Fourth Proportional to 279,423.60, 419,135.40 and 101,871.60

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Solution

The fourth proportional to 279,423.60, 419,135.40 and 101,871.60 is: 152,807.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,423.60 : 419,135.40 = 101,871.60 : x
  2. Step 2: Convert to fraction form
    279,423.60/419,135.40 = 101,871.60/x
  3. Step 3: Cross multiply
    279,423.60x = 419,135.40 × 101,871.60
  4. Step 4: Simplify right side
    279,423.60x = 42,697,993,814.64
  5. Step 5: Solve for x
    x = 42,697,993,814.64/279,423.60
  6. Step 6: Final answer
    x = 152,807.40

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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.