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Finding the Fourth Proportional to 528,409.44, 792,761.04 and 212,792.40

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Solution

The fourth proportional to 528,409.44, 792,761.04 and 212,792.40 is: 319,247.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,409.44 : 792,761.04 = 212,792.40 : x
  2. Step 2: Convert to fraction form
    528,409.44/792,761.04 = 212,792.40/x
  3. Step 3: Cross multiply
    528,409.44x = 792,761.04 × 212,792.40
  4. Step 4: Simplify right side
    528,409.44x = 168,693,524,328.10
  5. Step 5: Solve for x
    x = 168,693,524,328.10/528,409.44
  6. Step 6: Final answer
    x = 319,247.75

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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.