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Finding the Fourth Proportional to 313,663.12, 432,859.04 and 170,425.55

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Solution

The fourth proportional to 313,663.12, 432,859.04 and 170,425.55 is: 235,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,663.12 : 432,859.04 = 170,425.55 : x
  2. Step 2: Convert to fraction form
    313,663.12/432,859.04 = 170,425.55/x
  3. Step 3: Cross multiply
    313,663.12x = 432,859.04 × 170,425.55
  4. Step 4: Simplify right side
    313,663.12x = 73,770,240,833.59
  5. Step 5: Solve for x
    x = 73,770,240,833.59/313,663.12
  6. Step 6: Final answer
    x = 235,189.40

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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.