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Finding the Fourth Proportional to 528,084.70, 792,515.85 and 212,767.90

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Solution

The fourth proportional to 528,084.70, 792,515.85 and 212,767.90 is: 319,308.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,084.70 : 792,515.85 = 212,767.90 : x
  2. Step 2: Convert to fraction form
    528,084.70/792,515.85 = 212,767.90/x
  3. Step 3: Cross multiply
    528,084.70x = 792,515.85 × 212,767.90
  4. Step 4: Simplify right side
    528,084.70x = 168,621,933,121.22
  5. Step 5: Solve for x
    x = 168,621,933,121.22/528,084.70
  6. Step 6: Final answer
    x = 319,308.50

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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.