Home / 312,123,395.71-430,385,186.82-198,913,637.61

Finding the Fourth Proportional to 312,123,395.71, 430,385,186.82 and 198,913,637.61

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Solution

The fourth proportional to 312,123,395.71, 430,385,186.82 and 198,913,637.61 is: 274,280,891.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,123,395.71 : 430,385,186.82 = 198,913,637.61 : x
  2. Step 2: Convert to fraction form
    312,123,395.71/430,385,186.82 = 198,913,637.61/x
  3. Step 3: Cross multiply
    312,123,395.71x = 430,385,186.82 × 198,913,637.61
  4. Step 4: Simplify right side
    312,123,395.71x = 85,609,483,083,825,632
  5. Step 5: Solve for x
    x = 85,609,483,083,825,632/312,123,395.71
  6. Step 6: Final answer
    x = 274,280,891.02

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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.