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Finding the Fourth Proportional to 223,221.60, 334,886.40 and 65,455.20

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Solution

The fourth proportional to 223,221.60, 334,886.40 and 65,455.20 is: 98,198.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,221.60 : 334,886.40 = 65,455.20 : x
  2. Step 2: Convert to fraction form
    223,221.60/334,886.40 = 65,455.20/x
  3. Step 3: Cross multiply
    223,221.60x = 334,886.40 × 65,455.20
  4. Step 4: Simplify right side
    223,221.60x = 21,920,056,289.28
  5. Step 5: Solve for x
    x = 21,920,056,289.28/223,221.60
  6. Step 6: Final answer
    x = 98,198.63

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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.