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Finding the Fourth Proportional to 528,093.80, 792,140.70 and 212,388.20

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Solution

The fourth proportional to 528,093.80, 792,140.70 and 212,388.20 is: 318,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,093.80 : 792,140.70 = 212,388.20 : x
  2. Step 2: Convert to fraction form
    528,093.80/792,140.70 = 212,388.20/x
  3. Step 3: Cross multiply
    528,093.80x = 792,140.70 × 212,388.20
  4. Step 4: Simplify right side
    528,093.80x = 168,241,337,419.74
  5. Step 5: Solve for x
    x = 168,241,337,419.74/528,093.80
  6. Step 6: Final answer
    x = 318,582.30

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Similar ratio
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1.5x scale

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.