Home / 528,086.20-792,518.10-212,769.40

Finding the Fourth Proportional to 528,086.20, 792,518.10 and 212,769.40

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Solution

The fourth proportional to 528,086.20, 792,518.10 and 212,769.40 is: 319,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,086.20 : 792,518.10 = 212,769.40 : x
  2. Step 2: Convert to fraction form
    528,086.20/792,518.10 = 212,769.40/x
  3. Step 3: Cross multiply
    528,086.20x = 792,518.10 × 212,769.40
  4. Step 4: Simplify right side
    528,086.20x = 168,623,600,626.14
  5. Step 5: Solve for x
    x = 168,623,600,626.14/528,086.20
  6. Step 6: Final answer
    x = 319,310.75

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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.