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Finding the Fourth Proportional to 286,807.64, 395,789.56 and 159,480.50

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Solution

The fourth proportional to 286,807.64, 395,789.56 and 159,480.50 is: 220,080.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,807.64 : 395,789.56 = 159,480.50 : x
  2. Step 2: Convert to fraction form
    286,807.64/395,789.56 = 159,480.50/x
  3. Step 3: Cross multiply
    286,807.64x = 395,789.56 × 159,480.50
  4. Step 4: Simplify right side
    286,807.64x = 63,120,714,545.93
  5. Step 5: Solve for x
    x = 63,120,714,545.93/286,807.64
  6. Step 6: Final answer
    x = 220,080.31

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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.