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Finding the Fourth Proportional to 225,078.66, 310,574.04 and 129,566.90

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Solution

The fourth proportional to 225,078.66, 310,574.04 and 129,566.90 is: 178,782.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,078.66 : 310,574.04 = 129,566.90 : x
  2. Step 2: Convert to fraction form
    225,078.66/310,574.04 = 129,566.90/x
  3. Step 3: Cross multiply
    225,078.66x = 310,574.04 × 129,566.90
  4. Step 4: Simplify right side
    225,078.66x = 40,240,114,030.41
  5. Step 5: Solve for x
    x = 40,240,114,030.41/225,078.66
  6. Step 6: Final answer
    x = 178,782.45

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.