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Finding the Fourth Proportional to 528,398.40, 792,431.28 and 173,329.92

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Solution

The fourth proportional to 528,398.40, 792,431.28 and 173,329.92 is: 259,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,398.40 : 792,431.28 = 173,329.92 : x
  2. Step 2: Convert to fraction form
    528,398.40/792,431.28 = 173,329.92/x
  3. Step 3: Cross multiply
    528,398.40x = 792,431.28 × 173,329.92
  4. Step 4: Simplify right side
    528,398.40x = 137,352,050,367.90
  5. Step 5: Solve for x
    x = 137,352,050,367.90/528,398.40
  6. Step 6: Final answer
    x = 259,940.32

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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.