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Finding the Fourth Proportional to 286,785.91, 395,762.10 and 159,460.39

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Solution

The fourth proportional to 286,785.91, 395,762.10 and 159,460.39 is: 220,053.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,785.91 : 395,762.10 = 159,460.39 : x
  2. Step 2: Convert to fraction form
    286,785.91/395,762.10 = 159,460.39/x
  3. Step 3: Cross multiply
    286,785.91x = 395,762.10 × 159,460.39
  4. Step 4: Simplify right side
    286,785.91x = 63,108,378,813.22
  5. Step 5: Solve for x
    x = 63,108,378,813.22/286,785.91
  6. Step 6: Final answer
    x = 220,053.97

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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.