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Finding the Fourth Proportional to 528,294.24, 792,638.64 and 212,840.64

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Solution

The fourth proportional to 528,294.24, 792,638.64 and 212,840.64 is: 319,340.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,294.24 : 792,638.64 = 212,840.64 : x
  2. Step 2: Convert to fraction form
    528,294.24/792,638.64 = 212,840.64/x
  3. Step 3: Cross multiply
    528,294.24x = 792,638.64 × 212,840.64
  4. Step 4: Simplify right side
    528,294.24x = 168,705,715,426.33
  5. Step 5: Solve for x
    x = 168,705,715,426.33/528,294.24
  6. Step 6: Final answer
    x = 319,340.44

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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.