Home / 285,309.04-393,721.67-157,981.90

Finding the Fourth Proportional to 285,309.04, 393,721.67 and 157,981.90

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Solution

The fourth proportional to 285,309.04, 393,721.67 and 157,981.90 is: 218,012.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,309.04 : 393,721.67 = 157,981.90 : x
  2. Step 2: Convert to fraction form
    285,309.04/393,721.67 = 157,981.90/x
  3. Step 3: Cross multiply
    285,309.04x = 393,721.67 × 157,981.90
  4. Step 4: Simplify right side
    285,309.04x = 62,200,896,707.86
  5. Step 5: Solve for x
    x = 62,200,896,707.86/285,309.04
  6. Step 6: Final answer
    x = 218,012.36

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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.