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Finding the Fourth Proportional to 521,745.74, 782,492.72 and 217,975.80

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Solution

The fourth proportional to 521,745.74, 782,492.72 and 217,975.80 is: 326,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,745.74 : 782,492.72 = 217,975.80 : x
  2. Step 2: Convert to fraction form
    521,745.74/782,492.72 = 217,975.80/x
  3. Step 3: Cross multiply
    521,745.74x = 782,492.72 × 217,975.80
  4. Step 4: Simplify right side
    521,745.74x = 170,564,476,636.18
  5. Step 5: Solve for x
    x = 170,564,476,636.18/521,745.74
  6. Step 6: Final answer
    x = 326,911.11

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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.