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Finding the Fourth Proportional to 225,240, 310,840.92 and 124,638

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Solution

The fourth proportional to 225,240, 310,840.92 and 124,638 is: 172,005.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,240 : 310,840.92 = 124,638 : x
  2. Step 2: Convert to fraction form
    225,240/310,840.92 = 124,638/x
  3. Step 3: Cross multiply
    225,240x = 310,840.92 × 124,638
  4. Step 4: Simplify right side
    225,240x = 38,742,590,586.96
  5. Step 5: Solve for x
    x = 38,742,590,586.96/225,240
  6. Step 6: Final answer
    x = 172,005.82

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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.