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Finding the Fourth Proportional to 286,625.74, 395,540.64 and 159,298.78

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Solution

The fourth proportional to 286,625.74, 395,540.64 and 159,298.78 is: 219,830.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,625.74 : 395,540.64 = 159,298.78 : x
  2. Step 2: Convert to fraction form
    286,625.74/395,540.64 = 159,298.78/x
  3. Step 3: Cross multiply
    286,625.74x = 395,540.64 × 159,298.78
  4. Step 4: Simplify right side
    286,625.74x = 63,009,141,392.42
  5. Step 5: Solve for x
    x = 63,009,141,392.42/286,625.74
  6. Step 6: Final answer
    x = 219,830.72

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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.