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Finding the Fourth Proportional to 313,871.25, 433,125.78 and 170,630.65

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Solution

The fourth proportional to 313,871.25, 433,125.78 and 170,630.65 is: 235,461.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,871.25 : 433,125.78 = 170,630.65 : x
  2. Step 2: Convert to fraction form
    313,871.25/433,125.78 = 170,630.65/x
  3. Step 3: Cross multiply
    313,871.25x = 433,125.78 × 170,630.65
  4. Step 4: Simplify right side
    313,871.25x = 73,904,534,234.50
  5. Step 5: Solve for x
    x = 73,904,534,234.50/313,871.25
  6. Step 6: Final answer
    x = 235,461.30

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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.