Home / 216,897,240.78-325,345,151.49-78,722,663.70

Finding the Fourth Proportional to 216,897,240.78, 325,345,151.49 and 78,722,663.70

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Solution

The fourth proportional to 216,897,240.78, 325,345,151.49 and 78,722,663.70 is: 118,083,737.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,897,240.78 : 325,345,151.49 = 78,722,663.70 : x
  2. Step 2: Convert to fraction form
    216,897,240.78/325,345,151.49 = 78,722,663.70/x
  3. Step 3: Cross multiply
    216,897,240.78x = 325,345,151.49 × 78,722,663.70
  4. Step 4: Simplify right side
    216,897,240.78x = 25,612,036,947,172,824
  5. Step 5: Solve for x
    x = 25,612,036,947,172,824/216,897,240.78
  6. Step 6: Final answer
    x = 118,083,737.97

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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.