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Finding the Fourth Proportional to 225,316.83, 310,952.19 and 129,829.65

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Solution

The fourth proportional to 225,316.83, 310,952.19 and 129,829.65 is: 179,173.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,316.83 : 310,952.19 = 129,829.65 : x
  2. Step 2: Convert to fraction form
    225,316.83/310,952.19 = 129,829.65/x
  3. Step 3: Cross multiply
    225,316.83x = 310,952.19 × 129,829.65
  4. Step 4: Simplify right side
    225,316.83x = 40,370,813,994.43
  5. Step 5: Solve for x
    x = 40,370,813,994.43/225,316.83
  6. Step 6: Final answer
    x = 179,173.54

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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.