Home / 358,979.20-495,428.16-215,785.60

Finding the Fourth Proportional to 358,979.20, 495,428.16 and 215,785.60

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Solution

The fourth proportional to 358,979.20, 495,428.16 and 215,785.60 is: 297,806.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,979.20 : 495,428.16 = 215,785.60 : x
  2. Step 2: Convert to fraction form
    358,979.20/495,428.16 = 215,785.60/x
  3. Step 3: Cross multiply
    358,979.20x = 495,428.16 × 215,785.60
  4. Step 4: Simplify right side
    358,979.20x = 106,906,262,762.50
  5. Step 5: Solve for x
    x = 106,906,262,762.50/358,979.20
  6. Step 6: Final answer
    x = 297,806.29

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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.