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Finding the Fourth Proportional to 225,042.44, 310,636.77 and 129,587.18

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Solution

The fourth proportional to 225,042.44, 310,636.77 and 129,587.18 is: 178,875.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,042.44 : 310,636.77 = 129,587.18 : x
  2. Step 2: Convert to fraction form
    225,042.44/310,636.77 = 129,587.18/x
  3. Step 3: Cross multiply
    225,042.44x = 310,636.77 × 129,587.18
  4. Step 4: Simplify right side
    225,042.44x = 40,254,543,028.61
  5. Step 5: Solve for x
    x = 40,254,543,028.61/225,042.44
  6. Step 6: Final answer
    x = 178,875.34

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1.5x scale

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.