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Finding the Fourth Proportional to 353,279.68, 529,919.52 and 205,432

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Solution

The fourth proportional to 353,279.68, 529,919.52 and 205,432 is: 308,148

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,279.68 : 529,919.52 = 205,432 : x
  2. Step 2: Convert to fraction form
    353,279.68/529,919.52 = 205,432/x
  3. Step 3: Cross multiply
    353,279.68x = 529,919.52 × 205,432
  4. Step 4: Simplify right side
    353,279.68x = 108,862,426,832.64
  5. Step 5: Solve for x
    x = 108,862,426,832.64/353,279.68
  6. Step 6: Final answer
    x = 308,148

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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.