Home / 209,431,554.59-289,035,959.75-156,416,221.73

Finding the Fourth Proportional to 209,431,554.59, 289,035,959.75 and 156,416,221.73

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Solution

The fourth proportional to 209,431,554.59, 289,035,959.75 and 156,416,221.73 is: 215,869,632.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,431,554.59 : 289,035,959.75 = 156,416,221.73 : x
  2. Step 2: Convert to fraction form
    209,431,554.59/289,035,959.75 = 156,416,221.73/x
  3. Step 3: Cross multiply
    209,431,554.59x = 289,035,959.75 × 156,416,221.73
  4. Step 4: Simplify right side
    209,431,554.59x = 45,209,912,768,726,416
  5. Step 5: Solve for x
    x = 45,209,912,768,726,416/209,431,554.59
  6. Step 6: Final answer
    x = 215,869,632.72

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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.