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Finding the Fourth Proportional to 313,327.76, 432,392.85 and 170,087.90

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Solution

The fourth proportional to 313,327.76, 432,392.85 and 170,087.90 is: 234,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,327.76 : 432,392.85 = 170,087.90 : x
  2. Step 2: Convert to fraction form
    313,327.76/432,392.85 = 170,087.90/x
  3. Step 3: Cross multiply
    313,327.76x = 432,392.85 × 170,087.90
  4. Step 4: Simplify right side
    313,327.76x = 73,544,789,669.55
  5. Step 5: Solve for x
    x = 73,544,789,669.55/313,327.76
  6. Step 6: Final answer
    x = 234,721.59

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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.