Home / 315,103,721.20-472,336,717.20-185,644,693.60

Finding the Fourth Proportional to 315,103,721.20, 472,336,717.20 and 185,644,693.60

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Solution

The fourth proportional to 315,103,721.20, 472,336,717.20 and 185,644,693.60 is: 278,279,179.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,103,721.20 : 472,336,717.20 = 185,644,693.60 : x
  2. Step 2: Convert to fraction form
    315,103,721.20/472,336,717.20 = 185,644,693.60/x
  3. Step 3: Cross multiply
    315,103,721.20x = 472,336,717.20 × 185,644,693.60
  4. Step 4: Simplify right side
    315,103,721.20x = 87,686,805,140,623,840
  5. Step 5: Solve for x
    x = 87,686,805,140,623,840/315,103,721.20
  6. Step 6: Final answer
    x = 278,279,179.97

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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.