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Finding the Fourth Proportional to 313,665.81, 432,859.50 and 170,426.04

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Solution

The fourth proportional to 313,665.81, 432,859.50 and 170,426.04 is: 235,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,665.81 : 432,859.50 = 170,426.04 : x
  2. Step 2: Convert to fraction form
    313,665.81/432,859.50 = 170,426.04/x
  3. Step 3: Cross multiply
    313,665.81x = 432,859.50 × 170,426.04
  4. Step 4: Simplify right side
    313,665.81x = 73,770,530,461.38
  5. Step 5: Solve for x
    x = 73,770,530,461.38/313,665.81
  6. Step 6: Final answer
    x = 235,188.31

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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.