Home / 221,427,209.40-332,140,814.10-85,117,039.80

Finding the Fourth Proportional to 221,427,209.40, 332,140,814.10 and 85,117,039.80

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Solution

The fourth proportional to 221,427,209.40, 332,140,814.10 and 85,117,039.80 is: 127,675,559.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,427,209.40 : 332,140,814.10 = 85,117,039.80 : x
  2. Step 2: Convert to fraction form
    221,427,209.40/332,140,814.10 = 85,117,039.80/x
  3. Step 3: Cross multiply
    221,427,209.40x = 332,140,814.10 × 85,117,039.80
  4. Step 4: Simplify right side
    221,427,209.40x = 28,270,842,892,954,104
  5. Step 5: Solve for x
    x = 28,270,842,892,954,104/221,427,209.40
  6. Step 6: Final answer
    x = 127,675,559.70

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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.