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Finding the Fourth Proportional to 528,310.24, 792,662.64 and 212,856.64

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Solution

The fourth proportional to 528,310.24, 792,662.64 and 212,856.64 is: 319,364.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,310.24 : 792,662.64 = 212,856.64 : x
  2. Step 2: Convert to fraction form
    528,310.24/792,662.64 = 212,856.64/x
  3. Step 3: Cross multiply
    528,310.24x = 792,662.64 × 212,856.64
  4. Step 4: Simplify right side
    528,310.24x = 168,723,506,203.93
  5. Step 5: Solve for x
    x = 168,723,506,203.93/528,310.24
  6. Step 6: Final answer
    x = 319,364.44

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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.