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Finding the Fourth Proportional to 313,640.96, 432,822.18 and 170,402.18

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Solution

The fourth proportional to 313,640.96, 432,822.18 and 170,402.18 is: 235,153.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,640.96 : 432,822.18 = 170,402.18 : x
  2. Step 2: Convert to fraction form
    313,640.96/432,822.18 = 170,402.18/x
  3. Step 3: Cross multiply
    313,640.96x = 432,822.18 × 170,402.18
  4. Step 4: Simplify right side
    313,640.96x = 73,753,843,024.35
  5. Step 5: Solve for x
    x = 73,753,843,024.35/313,640.96
  6. Step 6: Final answer
    x = 235,153.73

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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.