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Finding the Fourth Proportional to 528,726.72, 792,440.52 and 208,557.21

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Solution

The fourth proportional to 528,726.72, 792,440.52 and 208,557.21 is: 312,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,726.72 : 792,440.52 = 208,557.21 : x
  2. Step 2: Convert to fraction form
    528,726.72/792,440.52 = 208,557.21/x
  3. Step 3: Cross multiply
    528,726.72x = 792,440.52 × 208,557.21
  4. Step 4: Simplify right side
    528,726.72x = 165,269,183,942.15
  5. Step 5: Solve for x
    x = 165,269,183,942.15/528,726.72
  6. Step 6: Final answer
    x = 312,579.59

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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.