Home / 228,409,860.15-315,206,006.85-123,988,002.21

Finding the Fourth Proportional to 228,409,860.15, 315,206,006.85 and 123,988,002.21

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Solution

The fourth proportional to 228,409,860.15, 315,206,006.85 and 123,988,002.21 is: 171,103,660.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409,860.15 : 315,206,006.85 = 123,988,002.21 : x
  2. Step 2: Convert to fraction form
    228,409,860.15/315,206,006.85 = 123,988,002.21/x
  3. Step 3: Cross multiply
    228,409,860.15x = 315,206,006.85 × 123,988,002.21
  4. Step 4: Simplify right side
    228,409,860.15x = 39,081,763,073,923,080
  5. Step 5: Solve for x
    x = 39,081,763,073,923,080/228,409,860.15
  6. Step 6: Final answer
    x = 171,103,660.10

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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.