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Finding the Fourth Proportional to 207,204.40, 310,728.48 and 66,925.36

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Solution

The fourth proportional to 207,204.40, 310,728.48 and 66,925.36 is: 100,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,204.40 : 310,728.48 = 66,925.36 : x
  2. Step 2: Convert to fraction form
    207,204.40/310,728.48 = 66,925.36/x
  3. Step 3: Cross multiply
    207,204.40x = 310,728.48 × 66,925.36
  4. Step 4: Simplify right side
    207,204.40x = 20,795,615,386.25
  5. Step 5: Solve for x
    x = 20,795,615,386.25/207,204.40
  6. Step 6: Final answer
    x = 100,362.81

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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.