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Finding the Fourth Proportional to 219,319.60, 328,979.40 and 188,215.60

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Solution

The fourth proportional to 219,319.60, 328,979.40 and 188,215.60 is: 282,323.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,319.60 : 328,979.40 = 188,215.60 : x
  2. Step 2: Convert to fraction form
    219,319.60/328,979.40 = 188,215.60/x
  3. Step 3: Cross multiply
    219,319.60x = 328,979.40 × 188,215.60
  4. Step 4: Simplify right side
    219,319.60x = 61,919,055,158.64
  5. Step 5: Solve for x
    x = 61,919,055,158.64/219,319.60
  6. Step 6: Final answer
    x = 282,323.40

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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.