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Finding the Fourth Proportional to 286,674, 429,993.99 and 86,996.04

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Solution

The fourth proportional to 286,674, 429,993.99 and 86,996.04 is: 130,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,674 : 429,993.99 = 86,996.04 : x
  2. Step 2: Convert to fraction form
    286,674/429,993.99 = 86,996.04/x
  3. Step 3: Cross multiply
    286,674x = 429,993.99 × 86,996.04
  4. Step 4: Simplify right side
    286,674x = 37,407,774,353.80
  5. Step 5: Solve for x
    x = 37,407,774,353.80/286,674
  6. Step 6: Final answer
    x = 130,488.90

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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.