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Finding the Fourth Proportional to 279,394.13, 419,106.69 and 79,699.16

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Solution

The fourth proportional to 279,394.13, 419,106.69 and 79,699.16 is: 119,553.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,394.13 : 419,106.69 = 79,699.16 : x
  2. Step 2: Convert to fraction form
    279,394.13/419,106.69 = 79,699.16/x
  3. Step 3: Cross multiply
    279,394.13x = 419,106.69 × 79,699.16
  4. Step 4: Simplify right side
    279,394.13x = 33,402,452,191.15
  5. Step 5: Solve for x
    x = 33,402,452,191.15/279,394.13
  6. Step 6: Final answer
    x = 119,553.16

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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.