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Finding the Fourth Proportional to 616,992.18, 925,508.75 and 212,180.40

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Solution

The fourth proportional to 616,992.18, 925,508.75 and 212,180.40 is: 318,277.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,992.18 : 925,508.75 = 212,180.40 : x
  2. Step 2: Convert to fraction form
    616,992.18/925,508.75 = 212,180.40/x
  3. Step 3: Cross multiply
    616,992.18x = 925,508.75 × 212,180.40
  4. Step 4: Simplify right side
    616,992.18x = 196,374,816,778.50
  5. Step 5: Solve for x
    x = 196,374,816,778.50/616,992.18
  6. Step 6: Final answer
    x = 318,277.64

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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.