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Finding the Fourth Proportional to 313,331.70, 432,398.70 and 170,091.90

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Solution

The fourth proportional to 313,331.70, 432,398.70 and 170,091.90 is: 234,727.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,331.70 : 432,398.70 = 170,091.90 : x
  2. Step 2: Convert to fraction form
    313,331.70/432,398.70 = 170,091.90/x
  3. Step 3: Cross multiply
    313,331.70x = 432,398.70 × 170,091.90
  4. Step 4: Simplify right side
    313,331.70x = 73,547,516,440.53
  5. Step 5: Solve for x
    x = 73,547,516,440.53/313,331.70
  6. Step 6: Final answer
    x = 234,727.34

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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.