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Finding the Fourth Proportional to 286,365.05, 429,553.03 and 86,684.66

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Solution

The fourth proportional to 286,365.05, 429,553.03 and 86,684.66 is: 130,028.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,365.05 : 429,553.03 = 86,684.66 : x
  2. Step 2: Convert to fraction form
    286,365.05/429,553.03 = 86,684.66/x
  3. Step 3: Cross multiply
    286,365.05x = 429,553.03 × 86,684.66
  4. Step 4: Simplify right side
    286,365.05x = 37,235,656,209.75
  5. Step 5: Solve for x
    x = 37,235,656,209.75/286,365.05
  6. Step 6: Final answer
    x = 130,028.64

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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.