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Finding the Fourth Proportional to 300,778.29, 415,053.39 and 176,640.12

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Solution

The fourth proportional to 300,778.29, 415,053.39 and 176,640.12 is: 243,751.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,778.29 : 415,053.39 = 176,640.12 : x
  2. Step 2: Convert to fraction form
    300,778.29/415,053.39 = 176,640.12/x
  3. Step 3: Cross multiply
    300,778.29x = 415,053.39 × 176,640.12
  4. Step 4: Simplify right side
    300,778.29x = 73,315,080,616.01
  5. Step 5: Solve for x
    x = 73,315,080,616.01/300,778.29
  6. Step 6: Final answer
    x = 243,751.24

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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.