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Finding the Fourth Proportional to 225,293.81, 310,903.92 and 129,798.45

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Solution

The fourth proportional to 225,293.81, 310,903.92 and 129,798.45 is: 179,120.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,293.81 : 310,903.92 = 129,798.45 : x
  2. Step 2: Convert to fraction form
    225,293.81/310,903.92 = 129,798.45/x
  3. Step 3: Cross multiply
    225,293.81x = 310,903.92 × 129,798.45
  4. Step 4: Simplify right side
    225,293.81x = 40,354,846,914.92
  5. Step 5: Solve for x
    x = 40,354,846,914.92/225,293.81
  6. Step 6: Final answer
    x = 179,120.98

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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.