Home / 228,409,763.72-315,205,873.79-123,987,905.78

Finding the Fourth Proportional to 228,409,763.72, 315,205,873.79 and 123,987,905.78

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Solution

The fourth proportional to 228,409,763.72, 315,205,873.79 and 123,987,905.78 is: 171,103,527.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,409,763.72 : 315,205,873.79 = 123,987,905.78 : x
  2. Step 2: Convert to fraction form
    228,409,763.72/315,205,873.79 = 123,987,905.78/x
  3. Step 3: Cross multiply
    228,409,763.72x = 315,205,873.79 × 123,987,905.78
  4. Step 4: Simplify right side
    228,409,763.72x = 39,081,716,178,581,128
  5. Step 5: Solve for x
    x = 39,081,716,178,581,128/228,409,763.72
  6. Step 6: Final answer
    x = 171,103,527.02

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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.