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Finding the Fourth Proportional to 313,628.69, 432,806.45 and 170,387.48

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Solution

The fourth proportional to 313,628.69, 432,806.45 and 170,387.48 is: 235,134.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,628.69 : 432,806.45 = 170,387.48 : x
  2. Step 2: Convert to fraction form
    313,628.69/432,806.45 = 170,387.48/x
  3. Step 3: Cross multiply
    313,628.69x = 432,806.45 × 170,387.48
  4. Step 4: Simplify right side
    313,628.69x = 73,744,797,327.28
  5. Step 5: Solve for x
    x = 73,744,797,327.28/313,628.69
  6. Step 6: Final answer
    x = 235,134.10

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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.