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Finding the Fourth Proportional to 528,305.10, 792,652.05 and 212,793.90

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Solution

The fourth proportional to 528,305.10, 792,652.05 and 212,793.90 is: 319,269.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,305.10 : 792,652.05 = 212,793.90 : x
  2. Step 2: Convert to fraction form
    528,305.10/792,652.05 = 212,793.90/x
  3. Step 3: Cross multiply
    528,305.10x = 792,652.05 × 212,793.90
  4. Step 4: Simplify right side
    528,305.10x = 168,671,521,062.50
  5. Step 5: Solve for x
    x = 168,671,521,062.50/528,305.10
  6. Step 6: Final answer
    x = 319,269.15

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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.