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Finding the Fourth Proportional to 528,052.30, 792,078.45 and 172,980.70

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Solution

The fourth proportional to 528,052.30, 792,078.45 and 172,980.70 is: 259,471.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,052.30 : 792,078.45 = 172,980.70 : x
  2. Step 2: Convert to fraction form
    528,052.30/792,078.45 = 172,980.70/x
  3. Step 3: Cross multiply
    528,052.30x = 792,078.45 × 172,980.70
  4. Step 4: Simplify right side
    528,052.30x = 137,014,284,735.92
  5. Step 5: Solve for x
    x = 137,014,284,735.92/528,052.30
  6. Step 6: Final answer
    x = 259,471.05

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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.