Home / 210,138,007.20-315,207,010.80-198,233,728.80

Finding the Fourth Proportional to 210,138,007.20, 315,207,010.80 and 198,233,728.80

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Solution

The fourth proportional to 210,138,007.20, 315,207,010.80 and 198,233,728.80 is: 297,350,593.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,138,007.20 : 315,207,010.80 = 198,233,728.80 : x
  2. Step 2: Convert to fraction form
    210,138,007.20/315,207,010.80 = 198,233,728.80/x
  3. Step 3: Cross multiply
    210,138,007.20x = 315,207,010.80 × 198,233,728.80
  4. Step 4: Simplify right side
    210,138,007.20x = 62,484,661,094,785,880
  5. Step 5: Solve for x
    x = 62,484,661,094,785,880/210,138,007.20
  6. Step 6: Final answer
    x = 297,350,593.20

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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.