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Finding the Fourth Proportional to 352,876.20, 529,314.30 and 219,323.40

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Solution

The fourth proportional to 352,876.20, 529,314.30 and 219,323.40 is: 328,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,876.20 : 529,314.30 = 219,323.40 : x
  2. Step 2: Convert to fraction form
    352,876.20/529,314.30 = 219,323.40/x
  3. Step 3: Cross multiply
    352,876.20x = 529,314.30 × 219,323.40
  4. Step 4: Simplify right side
    352,876.20x = 116,091,011,944.62
  5. Step 5: Solve for x
    x = 116,091,011,944.62/352,876.20
  6. Step 6: Final answer
    x = 328,985.10

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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.