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Finding the Fourth Proportional to 313,721.68, 432,935 and 170,481.76

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Solution

The fourth proportional to 313,721.68, 432,935 and 170,481.76 is: 235,264.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,721.68 : 432,935 = 170,481.76 : x
  2. Step 2: Convert to fraction form
    313,721.68/432,935 = 170,481.76/x
  3. Step 3: Cross multiply
    313,721.68x = 432,935 × 170,481.76
  4. Step 4: Simplify right side
    313,721.68x = 73,807,520,765.60
  5. Step 5: Solve for x
    x = 73,807,520,765.60/313,721.68
  6. Step 6: Final answer
    x = 235,264.33

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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.