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Finding the Fourth Proportional to 219,435.60, 329,119.80 and 69,656.36

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Solution

The fourth proportional to 219,435.60, 329,119.80 and 69,656.36 is: 104,473.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,435.60 : 329,119.80 = 69,656.36 : x
  2. Step 2: Convert to fraction form
    219,435.60/329,119.80 = 69,656.36/x
  3. Step 3: Cross multiply
    219,435.60x = 329,119.80 × 69,656.36
  4. Step 4: Simplify right side
    219,435.60x = 22,925,287,271.93
  5. Step 5: Solve for x
    x = 22,925,287,271.93/219,435.60
  6. Step 6: Final answer
    x = 104,473.87

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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.