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Finding the Fourth Proportional to 313,397.56, 432,490.89 and 170,157.70

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Solution

The fourth proportional to 313,397.56, 432,490.89 and 170,157.70 is: 234,818.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,397.56 : 432,490.89 = 170,157.70 : x
  2. Step 2: Convert to fraction form
    313,397.56/432,490.89 = 170,157.70/x
  3. Step 3: Cross multiply
    313,397.56x = 432,490.89 × 170,157.70
  4. Step 4: Simplify right side
    313,397.56x = 73,591,655,113.35
  5. Step 5: Solve for x
    x = 73,591,655,113.35/313,397.56
  6. Step 6: Final answer
    x = 234,818.85

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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.