Home / 203,631,742.80-305,447,614.20-187,688,512.80

Finding the Fourth Proportional to 203,631,742.80, 305,447,614.20 and 187,688,512.80

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Solution

The fourth proportional to 203,631,742.80, 305,447,614.20 and 187,688,512.80 is: 281,532,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,631,742.80 : 305,447,614.20 = 187,688,512.80 : x
  2. Step 2: Convert to fraction form
    203,631,742.80/305,447,614.20 = 187,688,512.80/x
  3. Step 3: Cross multiply
    203,631,742.80x = 305,447,614.20 × 187,688,512.80
  4. Step 4: Simplify right side
    203,631,742.80x = 57,329,008,447,506,160
  5. Step 5: Solve for x
    x = 57,329,008,447,506,160/203,631,742.80
  6. Step 6: Final answer
    x = 281,532,769.20

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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.