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Finding the Fourth Proportional to 648,551.50, 972,813.76 and 216,300.09

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Solution

The fourth proportional to 648,551.50, 972,813.76 and 216,300.09 is: 324,445.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,551.50 : 972,813.76 = 216,300.09 : x
  2. Step 2: Convert to fraction form
    648,551.50/972,813.76 = 216,300.09/x
  3. Step 3: Cross multiply
    648,551.50x = 972,813.76 × 216,300.09
  4. Step 4: Simplify right side
    648,551.50x = 210,419,703,841.24
  5. Step 5: Solve for x
    x = 210,419,703,841.24/648,551.50
  6. Step 6: Final answer
    x = 324,445.64

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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.