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Finding the Fourth Proportional to 666,352.74, 999,528.33 and 217,072.90

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Solution

The fourth proportional to 666,352.74, 999,528.33 and 217,072.90 is: 325,609.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,352.74 : 999,528.33 = 217,072.90 : x
  2. Step 2: Convert to fraction form
    666,352.74/999,528.33 = 217,072.90/x
  3. Step 3: Cross multiply
    666,352.74x = 999,528.33 × 217,072.90
  4. Step 4: Simplify right side
    666,352.74x = 216,970,513,225.26
  5. Step 5: Solve for x
    x = 216,970,513,225.26/666,352.74
  6. Step 6: Final answer
    x = 325,609.10

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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.