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Finding the Fourth Proportional to 225,298.04, 310,980.54 and 129,868.52

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Solution

The fourth proportional to 225,298.04, 310,980.54 and 129,868.52 is: 179,258.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,298.04 : 310,980.54 = 129,868.52 : x
  2. Step 2: Convert to fraction form
    225,298.04/310,980.54 = 129,868.52/x
  3. Step 3: Cross multiply
    225,298.04x = 310,980.54 × 129,868.52
  4. Step 4: Simplify right side
    225,298.04x = 40,386,582,478.60
  5. Step 5: Solve for x
    x = 40,386,582,478.60/225,298.04
  6. Step 6: Final answer
    x = 179,258.47

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Why These Related Problems?

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