Home / 211,019,920.80-316,529,881.20-192,208,221.60

Finding the Fourth Proportional to 211,019,920.80, 316,529,881.20 and 192,208,221.60

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Solution

The fourth proportional to 211,019,920.80, 316,529,881.20 and 192,208,221.60 is: 288,312,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,019,920.80 : 316,529,881.20 = 192,208,221.60 : x
  2. Step 2: Convert to fraction form
    211,019,920.80/316,529,881.20 = 192,208,221.60/x
  3. Step 3: Cross multiply
    211,019,920.80x = 316,529,881.20 × 192,208,221.60
  4. Step 4: Simplify right side
    211,019,920.80x = 60,839,645,548,711,272
  5. Step 5: Solve for x
    x = 60,839,645,548,711,272/211,019,920.80
  6. Step 6: Final answer
    x = 288,312,332.40

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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.