Home / 285,111.50-393,447.78-156,049.94

Finding the Fourth Proportional to 285,111.50, 393,447.78 and 156,049.94

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Solution

The fourth proportional to 285,111.50, 393,447.78 and 156,049.94 is: 215,345.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,111.50 : 393,447.78 = 156,049.94 : x
  2. Step 2: Convert to fraction form
    285,111.50/393,447.78 = 156,049.94/x
  3. Step 3: Cross multiply
    285,111.50x = 393,447.78 × 156,049.94
  4. Step 4: Simplify right side
    285,111.50x = 61,397,502,462.13
  5. Step 5: Solve for x
    x = 61,397,502,462.13/285,111.50
  6. Step 6: Final answer
    x = 215,345.58

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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.