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Finding the Fourth Proportional to 353,104.60, 528,965.70 and 212,445.40

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Solution

The fourth proportional to 353,104.60, 528,965.70 and 212,445.40 is: 318,252.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,104.60 : 528,965.70 = 212,445.40 : x
  2. Step 2: Convert to fraction form
    353,104.60/528,965.70 = 212,445.40/x
  3. Step 3: Cross multiply
    353,104.60x = 528,965.70 × 212,445.40
  4. Step 4: Simplify right side
    353,104.60x = 112,376,329,722.78
  5. Step 5: Solve for x
    x = 112,376,329,722.78/353,104.60
  6. Step 6: Final answer
    x = 318,252.24

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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.