Home / 217,312,939.40-325,857,434.70-80,928,120.20

Finding the Fourth Proportional to 217,312,939.40, 325,857,434.70 and 80,928,120.20

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Solution

The fourth proportional to 217,312,939.40, 325,857,434.70 and 80,928,120.20 is: 121,350,480.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,312,939.40 : 325,857,434.70 = 80,928,120.20 : x
  2. Step 2: Convert to fraction form
    217,312,939.40/325,857,434.70 = 80,928,120.20/x
  3. Step 3: Cross multiply
    217,312,939.40x = 325,857,434.70 × 80,928,120.20
  4. Step 4: Simplify right side
    217,312,939.40x = 26,371,029,643,465,252
  5. Step 5: Solve for x
    x = 26,371,029,643,465,252/217,312,939.40
  6. Step 6: Final answer
    x = 121,350,480.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.