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Finding the Fourth Proportional to 313,148.56, 432,145.32 and 177,179.68

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Solution

The fourth proportional to 313,148.56, 432,145.32 and 177,179.68 is: 244,508.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,148.56 : 432,145.32 = 177,179.68 : x
  2. Step 2: Convert to fraction form
    313,148.56/432,145.32 = 177,179.68/x
  3. Step 3: Cross multiply
    313,148.56x = 432,145.32 × 177,179.68
  4. Step 4: Simplify right side
    313,148.56x = 76,567,369,511.10
  5. Step 5: Solve for x
    x = 76,567,369,511.10/313,148.56
  6. Step 6: Final answer
    x = 244,508.13

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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.