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Finding the Fourth Proportional to 643,802.40, 965,703.72 and 170,524.80

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Solution

The fourth proportional to 643,802.40, 965,703.72 and 170,524.80 is: 255,787.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,802.40 : 965,703.72 = 170,524.80 : x
  2. Step 2: Convert to fraction form
    643,802.40/965,703.72 = 170,524.80/x
  3. Step 3: Cross multiply
    643,802.40x = 965,703.72 × 170,524.80
  4. Step 4: Simplify right side
    643,802.40x = 164,676,433,712.26
  5. Step 5: Solve for x
    x = 164,676,433,712.26/643,802.40
  6. Step 6: Final answer
    x = 255,787.23

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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.