Home / 228,378,868.79-315,108,816.33-129,259,616.21

Finding the Fourth Proportional to 228,378,868.79, 315,108,816.33 and 129,259,616.21

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Solution

The fourth proportional to 228,378,868.79, 315,108,816.33 and 129,259,616.21 is: 178,347,694.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,378,868.79 : 315,108,816.33 = 129,259,616.21 : x
  2. Step 2: Convert to fraction form
    228,378,868.79/315,108,816.33 = 129,259,616.21/x
  3. Step 3: Cross multiply
    228,378,868.79x = 315,108,816.33 × 129,259,616.21
  4. Step 4: Simplify right side
    228,378,868.79x = 40,730,844,661,627,632
  5. Step 5: Solve for x
    x = 40,730,844,661,627,632/228,378,868.79
  6. Step 6: Final answer
    x = 178,347,694.24

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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.