Home / 355,001,469-489,899,637.96-198,368,940.48

Finding the Fourth Proportional to 355,001,469, 489,899,637.96 and 198,368,940.48

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Solution

The fourth proportional to 355,001,469, 489,899,637.96 and 198,368,940.48 is: 273,747,802.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,001,469 : 489,899,637.96 = 198,368,940.48 : x
  2. Step 2: Convert to fraction form
    355,001,469/489,899,637.96 = 198,368,940.48/x
  3. Step 3: Cross multiply
    355,001,469x = 489,899,637.96 × 198,368,940.48
  4. Step 4: Simplify right side
    355,001,469x = 97,180,872,123,660,784
  5. Step 5: Solve for x
    x = 97,180,872,123,660,784/355,001,469
  6. Step 6: Final answer
    x = 273,747,802.78

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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.