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Finding the Fourth Proportional to 207,131.80, 310,697.70 and 74,016.40

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Solution

The fourth proportional to 207,131.80, 310,697.70 and 74,016.40 is: 111,024.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,131.80 : 310,697.70 = 74,016.40 : x
  2. Step 2: Convert to fraction form
    207,131.80/310,697.70 = 74,016.40/x
  3. Step 3: Cross multiply
    207,131.80x = 310,697.70 × 74,016.40
  4. Step 4: Simplify right side
    207,131.80x = 22,996,725,242.28
  5. Step 5: Solve for x
    x = 22,996,725,242.28/207,131.80
  6. Step 6: Final answer
    x = 111,024.60

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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.