Home / 207,212.40-310,740.48-66,933.36

Finding the Fourth Proportional to 207,212.40, 310,740.48 and 66,933.36

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Solution

The fourth proportional to 207,212.40, 310,740.48 and 66,933.36 is: 100,374.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,212.40 : 310,740.48 = 66,933.36 : x
  2. Step 2: Convert to fraction form
    207,212.40/310,740.48 = 66,933.36/x
  3. Step 3: Cross multiply
    207,212.40x = 310,740.48 × 66,933.36
  4. Step 4: Simplify right side
    207,212.40x = 20,798,904,414.41
  5. Step 5: Solve for x
    x = 20,798,904,414.41/207,212.40
  6. Step 6: Final answer
    x = 100,374.81

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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.