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Finding the Fourth Proportional to 315,394.69, 435,179.69 and 181,232.77

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Solution

The fourth proportional to 315,394.69, 435,179.69 and 181,232.77 is: 250,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,394.69 : 435,179.69 = 181,232.77 : x
  2. Step 2: Convert to fraction form
    315,394.69/435,179.69 = 181,232.77/x
  3. Step 3: Cross multiply
    315,394.69x = 435,179.69 × 181,232.77
  4. Step 4: Simplify right side
    315,394.69x = 78,868,818,943.62
  5. Step 5: Solve for x
    x = 78,868,818,943.62/315,394.69
  6. Step 6: Final answer
    x = 250,063.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.