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Finding the Fourth Proportional to 643,915.04, 965,653.84 and 223,092.68

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Solution

The fourth proportional to 643,915.04, 965,653.84 and 223,092.68 is: 334,563.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,915.04 : 965,653.84 = 223,092.68 : x
  2. Step 2: Convert to fraction form
    643,915.04/965,653.84 = 223,092.68/x
  3. Step 3: Cross multiply
    643,915.04x = 965,653.84 × 223,092.68
  4. Step 4: Simplify right side
    643,915.04x = 215,430,303,117.89
  5. Step 5: Solve for x
    x = 215,430,303,117.89/643,915.04
  6. Step 6: Final answer
    x = 334,563.24

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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.