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Finding the Fourth Proportional to 286,535.67, 429,778.74 and 96,991.97

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Solution

The fourth proportional to 286,535.67, 429,778.74 and 96,991.97 is: 145,479.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,535.67 : 429,778.74 = 96,991.97 : x
  2. Step 2: Convert to fraction form
    286,535.67/429,778.74 = 96,991.97/x
  3. Step 3: Cross multiply
    286,535.67x = 429,778.74 × 96,991.97
  4. Step 4: Simplify right side
    286,535.67x = 41,685,086,656.72
  5. Step 5: Solve for x
    x = 41,685,086,656.72/286,535.67
  6. Step 6: Final answer
    x = 145,479.57

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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.