Home / 285,309.29-393,722.01-157,982.15

Finding the Fourth Proportional to 285,309.29, 393,722.01 and 157,982.15

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Solution

The fourth proportional to 285,309.29, 393,722.01 and 157,982.15 is: 218,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,309.29 : 393,722.01 = 157,982.15 : x
  2. Step 2: Convert to fraction form
    285,309.29/393,722.01 = 157,982.15/x
  3. Step 3: Cross multiply
    285,309.29x = 393,722.01 × 157,982.15
  4. Step 4: Simplify right side
    285,309.29x = 62,201,049,642.12
  5. Step 5: Solve for x
    x = 62,201,049,642.12/285,309.29
  6. Step 6: Final answer
    x = 218,012.70

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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.