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Finding the Fourth Proportional to 286,726.80, 429,701.40 and 191,686.80

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Solution

The fourth proportional to 286,726.80, 429,701.40 and 191,686.80 is: 287,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,726.80 : 429,701.40 = 191,686.80 : x
  2. Step 2: Convert to fraction form
    286,726.80/429,701.40 = 191,686.80/x
  3. Step 3: Cross multiply
    286,726.80x = 429,701.40 × 191,686.80
  4. Step 4: Simplify right side
    286,726.80x = 82,368,086,321.52
  5. Step 5: Solve for x
    x = 82,368,086,321.52/286,726.80
  6. Step 6: Final answer
    x = 287,270.27

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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.