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Finding the Fourth Proportional to 528,097.30, 792,145.95 and 212,391.70

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Solution

The fourth proportional to 528,097.30, 792,145.95 and 212,391.70 is: 318,587.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,097.30 : 792,145.95 = 212,391.70 : x
  2. Step 2: Convert to fraction form
    528,097.30/792,145.95 = 212,391.70/x
  3. Step 3: Cross multiply
    528,097.30x = 792,145.95 × 212,391.70
  4. Step 4: Simplify right side
    528,097.30x = 168,245,224,968.62
  5. Step 5: Solve for x
    x = 168,245,224,968.62/528,097.30
  6. Step 6: Final answer
    x = 318,587.55

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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.