Home / 280,229,101.16-420,383,767.59-86,156,811.50

Finding the Fourth Proportional to 280,229,101.16, 420,383,767.59 and 86,156,811.50

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Solution

The fourth proportional to 280,229,101.16, 420,383,767.59 and 86,156,811.50 is: 129,247,550.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,229,101.16 : 420,383,767.59 = 86,156,811.50 : x
  2. Step 2: Convert to fraction form
    280,229,101.16/420,383,767.59 = 86,156,811.50/x
  3. Step 3: Cross multiply
    280,229,101.16x = 420,383,767.59 × 86,156,811.50
  4. Step 4: Simplify right side
    280,229,101.16x = 36,218,925,019,809,520
  5. Step 5: Solve for x
    x = 36,218,925,019,809,520/280,229,101.16
  6. Step 6: Final answer
    x = 129,247,550.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.