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Finding the Fourth Proportional to 643,582.26, 965,419.56 and 170,262

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Solution

The fourth proportional to 643,582.26, 965,419.56 and 170,262 is: 255,405.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,582.26 : 965,419.56 = 170,262 : x
  2. Step 2: Convert to fraction form
    643,582.26/965,419.56 = 170,262/x
  3. Step 3: Cross multiply
    643,582.26x = 965,419.56 × 170,262
  4. Step 4: Simplify right side
    643,582.26x = 164,374,265,124.72
  5. Step 5: Solve for x
    x = 164,374,265,124.72/643,582.26
  6. Step 6: Final answer
    x = 255,405.21

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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.