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Finding the Fourth Proportional to 528,078.65, 792,117.98 and 173,128.55

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Solution

The fourth proportional to 528,078.65, 792,117.98 and 173,128.55 is: 259,692.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,078.65 : 792,117.98 = 173,128.55 : x
  2. Step 2: Convert to fraction form
    528,078.65/792,117.98 = 173,128.55/x
  3. Step 3: Cross multiply
    528,078.65x = 792,117.98 × 173,128.55
  4. Step 4: Simplify right side
    528,078.65x = 137,138,237,306.33
  5. Step 5: Solve for x
    x = 137,138,237,306.33/528,078.65
  6. Step 6: Final answer
    x = 259,692.83

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Similar ratio
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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.