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Finding the Fourth Proportional to 213,578.62, 320,866.22 and 124,894.55

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Solution

The fourth proportional to 213,578.62, 320,866.22 and 124,894.55 is: 187,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,578.62 : 320,866.22 = 124,894.55 : x
  2. Step 2: Convert to fraction form
    213,578.62/320,866.22 = 124,894.55/x
  3. Step 3: Cross multiply
    213,578.62x = 320,866.22 × 124,894.55
  4. Step 4: Simplify right side
    213,578.62x = 40,074,443,271.50
  5. Step 5: Solve for x
    x = 40,074,443,271.50/213,578.62
  6. Step 6: Final answer
    x = 187,633.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.