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Finding the Fourth Proportional to 286,799.80, 429,810.90 and 191,759.80

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Solution

The fourth proportional to 286,799.80, 429,810.90 and 191,759.80 is: 287,379.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,799.80 : 429,810.90 = 191,759.80 : x
  2. Step 2: Convert to fraction form
    286,799.80/429,810.90 = 191,759.80/x
  3. Step 3: Cross multiply
    286,799.80x = 429,810.90 × 191,759.80
  4. Step 4: Simplify right side
    286,799.80x = 82,420,452,221.82
  5. Step 5: Solve for x
    x = 82,420,452,221.82/286,799.80
  6. Step 6: Final answer
    x = 287,379.74

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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.