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Finding the Fourth Proportional to 666,352.85, 999,528.53 and 217,073.05

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Solution

The fourth proportional to 666,352.85, 999,528.53 and 217,073.05 is: 325,609.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,352.85 : 999,528.53 = 217,073.05 : x
  2. Step 2: Convert to fraction form
    666,352.85/999,528.53 = 217,073.05/x
  3. Step 3: Cross multiply
    666,352.85x = 999,528.53 × 217,073.05
  4. Step 4: Simplify right side
    666,352.85x = 216,970,702,984.93
  5. Step 5: Solve for x
    x = 216,970,702,984.93/666,352.85
  6. Step 6: Final answer
    x = 325,609.33

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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.