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Finding the Fourth Proportional to 286,302.30, 429,344.10 and 86,556.30

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Solution

The fourth proportional to 286,302.30, 429,344.10 and 86,556.30 is: 129,801.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,302.30 : 429,344.10 = 86,556.30 : x
  2. Step 2: Convert to fraction form
    286,302.30/429,344.10 = 86,556.30/x
  3. Step 3: Cross multiply
    286,302.30x = 429,344.10 × 86,556.30
  4. Step 4: Simplify right side
    286,302.30x = 37,162,436,722.83
  5. Step 5: Solve for x
    x = 37,162,436,722.83/286,302.30
  6. Step 6: Final answer
    x = 129,801.39

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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.