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Finding the Fourth Proportional to 207,152.40, 310,735.08 and 66,912.24

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Solution

The fourth proportional to 207,152.40, 310,735.08 and 66,912.24 is: 100,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,152.40 : 310,735.08 = 66,912.24 : x
  2. Step 2: Convert to fraction form
    207,152.40/310,735.08 = 66,912.24/x
  3. Step 3: Cross multiply
    207,152.40x = 310,735.08 × 66,912.24
  4. Step 4: Simplify right side
    207,152.40x = 20,791,980,249.38
  5. Step 5: Solve for x
    x = 20,791,980,249.38/207,152.40
  6. Step 6: Final answer
    x = 100,370.45

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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.