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Finding the Fourth Proportional to 265,785.36, 398,395.99 and 130,658.86

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Solution

The fourth proportional to 265,785.36, 398,395.99 and 130,658.86 is: 195,849.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,785.36 : 398,395.99 = 130,658.86 : x
  2. Step 2: Convert to fraction form
    265,785.36/398,395.99 = 130,658.86/x
  3. Step 3: Cross multiply
    265,785.36x = 398,395.99 × 130,658.86
  4. Step 4: Simplify right side
    265,785.36x = 52,053,965,881.97
  5. Step 5: Solve for x
    x = 52,053,965,881.97/265,785.36
  6. Step 6: Final answer
    x = 195,849.64

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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.