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Finding the Fourth Proportional to 528,142.80, 792,447.48 and 213,214.80

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Solution

The fourth proportional to 528,142.80, 792,447.48 and 213,214.80 is: 319,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,142.80 : 792,447.48 = 213,214.80 : x
  2. Step 2: Convert to fraction form
    528,142.80/792,447.48 = 213,214.80/x
  3. Step 3: Cross multiply
    528,142.80x = 792,447.48 × 213,214.80
  4. Step 4: Simplify right side
    528,142.80x = 168,961,530,958.70
  5. Step 5: Solve for x
    x = 168,961,530,958.70/528,142.80
  6. Step 6: Final answer
    x = 319,916.38

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1.5x scale

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.