Home / 215,964,912.80-323,975,785.20-79,745,981.60

Finding the Fourth Proportional to 215,964,912.80, 323,975,785.20 and 79,745,981.60

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Solution

The fourth proportional to 215,964,912.80, 323,975,785.20 and 79,745,981.60 is: 119,629,465.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,964,912.80 : 323,975,785.20 = 79,745,981.60 : x
  2. Step 2: Convert to fraction form
    215,964,912.80/323,975,785.20 = 79,745,981.60/x
  3. Step 3: Cross multiply
    215,964,912.80x = 323,975,785.20 × 79,745,981.60
  4. Step 4: Simplify right side
    215,964,912.80x = 25,835,767,005,404,748
  5. Step 5: Solve for x
    x = 25,835,767,005,404,748/215,964,912.80
  6. Step 6: Final answer
    x = 119,629,465.13

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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.