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Finding the Fourth Proportional to 207,278.70, 310,918.06 and 74,222.70

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Solution

The fourth proportional to 207,278.70, 310,918.06 and 74,222.70 is: 111,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,278.70 : 310,918.06 = 74,222.70 : x
  2. Step 2: Convert to fraction form
    207,278.70/310,918.06 = 74,222.70/x
  3. Step 3: Cross multiply
    207,278.70x = 310,918.06 × 74,222.70
  4. Step 4: Simplify right side
    207,278.70x = 23,077,177,891.96
  5. Step 5: Solve for x
    x = 23,077,177,891.96/207,278.70
  6. Step 6: Final answer
    x = 111,334.05

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1.5x scale

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.