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Finding the Fourth Proportional to 286,037.82, 429,126.09 and 86,346.27

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Solution

The fourth proportional to 286,037.82, 429,126.09 and 86,346.27 is: 129,540.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,037.82 : 429,126.09 = 86,346.27 : x
  2. Step 2: Convert to fraction form
    286,037.82/429,126.09 = 86,346.27/x
  3. Step 3: Cross multiply
    286,037.82x = 429,126.09 × 86,346.27
  4. Step 4: Simplify right side
    286,037.82x = 37,053,437,231.18
  5. Step 5: Solve for x
    x = 37,053,437,231.18/286,037.82
  6. Step 6: Final answer
    x = 129,540.34

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1.5x scale

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.