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Finding the Fourth Proportional to 207,712.20, 310,912.20 and 163,097.40

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Solution

The fourth proportional to 207,712.20, 310,912.20 and 163,097.40 is: 244,130.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,712.20 : 310,912.20 = 163,097.40 : x
  2. Step 2: Convert to fraction form
    207,712.20/310,912.20 = 163,097.40/x
  3. Step 3: Cross multiply
    207,712.20x = 310,912.20 × 163,097.40
  4. Step 4: Simplify right side
    207,712.20x = 50,708,971,448.28
  5. Step 5: Solve for x
    x = 50,708,971,448.28/207,712.20
  6. Step 6: Final answer
    x = 244,130.92

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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.