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Finding the Fourth Proportional to 286,179.80, 429,269.29 and 99,191.30

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Solution

The fourth proportional to 286,179.80, 429,269.29 and 99,191.30 is: 148,786.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,179.80 : 429,269.29 = 99,191.30 : x
  2. Step 2: Convert to fraction form
    286,179.80/429,269.29 = 99,191.30/x
  3. Step 3: Cross multiply
    286,179.80x = 429,269.29 × 99,191.30
  4. Step 4: Simplify right side
    286,179.80x = 42,579,776,530.85
  5. Step 5: Solve for x
    x = 42,579,776,530.85/286,179.80
  6. Step 6: Final answer
    x = 148,786.80

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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.