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Finding the Fourth Proportional to 279,810.60, 419,715.90 and 153,839.40

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Solution

The fourth proportional to 279,810.60, 419,715.90 and 153,839.40 is: 230,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,810.60 : 419,715.90 = 153,839.40 : x
  2. Step 2: Convert to fraction form
    279,810.60/419,715.90 = 153,839.40/x
  3. Step 3: Cross multiply
    279,810.60x = 419,715.90 × 153,839.40
  4. Step 4: Simplify right side
    279,810.60x = 64,568,842,226.46
  5. Step 5: Solve for x
    x = 64,568,842,226.46/279,810.60
  6. Step 6: Final answer
    x = 230,759.10

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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.