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Finding the Fourth Proportional to 219,100.40, 328,699.92 and 69,349.64

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Solution

The fourth proportional to 219,100.40, 328,699.92 and 69,349.64 is: 104,040.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,100.40 : 328,699.92 = 69,349.64 : x
  2. Step 2: Convert to fraction form
    219,100.40/328,699.92 = 69,349.64/x
  3. Step 3: Cross multiply
    219,100.40x = 328,699.92 × 69,349.64
  4. Step 4: Simplify right side
    219,100.40x = 22,795,221,120.03
  5. Step 5: Solve for x
    x = 22,795,221,120.03/219,100.40
  6. Step 6: Final answer
    x = 104,040.07

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1.5x scale

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.