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Finding the Fourth Proportional to 286,423.30, 429,525.60 and 86,677.30

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Solution

The fourth proportional to 286,423.30, 429,525.60 and 86,677.30 is: 129,982.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,423.30 : 429,525.60 = 86,677.30 : x
  2. Step 2: Convert to fraction form
    286,423.30/429,525.60 = 86,677.30/x
  3. Step 3: Cross multiply
    286,423.30x = 429,525.60 × 86,677.30
  4. Step 4: Simplify right side
    286,423.30x = 37,230,119,288.88
  5. Step 5: Solve for x
    x = 37,230,119,288.88/286,423.30
  6. Step 6: Final answer
    x = 129,982.86

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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.