Home / 208,656,471.20-312,984,706.80-132,065,981.60

Finding the Fourth Proportional to 208,656,471.20, 312,984,706.80 and 132,065,981.60

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Solution

The fourth proportional to 208,656,471.20, 312,984,706.80 and 132,065,981.60 is: 198,098,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,656,471.20 : 312,984,706.80 = 132,065,981.60 : x
  2. Step 2: Convert to fraction form
    208,656,471.20/312,984,706.80 = 132,065,981.60/x
  3. Step 3: Cross multiply
    208,656,471.20x = 312,984,706.80 × 132,065,981.60
  4. Step 4: Simplify right side
    208,656,471.20x = 41,334,632,529,330,192
  5. Step 5: Solve for x
    x = 41,334,632,529,330,192/208,656,471.20
  6. Step 6: Final answer
    x = 198,098,972.40

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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.