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Finding the Fourth Proportional to 291,575.73, 435,766.02 and 212,855.73

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Solution

The fourth proportional to 291,575.73, 435,766.02 and 212,855.73 is: 318,117.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,575.73 : 435,766.02 = 212,855.73 : x
  2. Step 2: Convert to fraction form
    291,575.73/435,766.02 = 212,855.73/x
  3. Step 3: Cross multiply
    291,575.73x = 435,766.02 × 212,855.73
  4. Step 4: Simplify right side
    291,575.73x = 92,755,294,296.29
  5. Step 5: Solve for x
    x = 92,755,294,296.29/291,575.73
  6. Step 6: Final answer
    x = 318,117.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.