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Finding the Fourth Proportional to 643,798.69, 965,870.26 and 223,074.56

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Solution

The fourth proportional to 643,798.69, 965,870.26 and 223,074.56 is: 334,671.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,798.69 : 965,870.26 = 223,074.56 : x
  2. Step 2: Convert to fraction form
    643,798.69/965,870.26 = 223,074.56/x
  3. Step 3: Cross multiply
    643,798.69x = 965,870.26 × 223,074.56
  4. Step 4: Simplify right side
    643,798.69x = 215,461,085,123.58
  5. Step 5: Solve for x
    x = 215,461,085,123.58/643,798.69
  6. Step 6: Final answer
    x = 334,671.52

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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.