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Finding the Fourth Proportional to 353,223.60, 528,625.80 and 213,082.80

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Solution

The fourth proportional to 353,223.60, 528,625.80 and 213,082.80 is: 318,894.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,223.60 : 528,625.80 = 213,082.80 : x
  2. Step 2: Convert to fraction form
    353,223.60/528,625.80 = 213,082.80/x
  3. Step 3: Cross multiply
    353,223.60x = 528,625.80 × 213,082.80
  4. Step 4: Simplify right side
    353,223.60x = 112,641,065,616.24
  5. Step 5: Solve for x
    x = 112,641,065,616.24/353,223.60
  6. Step 6: Final answer
    x = 318,894.51

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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.