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Finding the Fourth Proportional to 385,432.04, 531,911.13 and 215,662.52

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Solution

The fourth proportional to 385,432.04, 531,911.13 and 215,662.52 is: 297,622.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,432.04 : 531,911.13 = 215,662.52 : x
  2. Step 2: Convert to fraction form
    385,432.04/531,911.13 = 215,662.52/x
  3. Step 3: Cross multiply
    385,432.04x = 531,911.13 × 215,662.52
  4. Step 4: Simplify right side
    385,432.04x = 114,713,294,711.85
  5. Step 5: Solve for x
    x = 114,713,294,711.85/385,432.04
  6. Step 6: Final answer
    x = 297,622.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.