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Finding the Fourth Proportional to 219,415.60, 329,134.78 and 69,667.60

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Solution

The fourth proportional to 219,415.60, 329,134.78 and 69,667.60 is: 104,505.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,415.60 : 329,134.78 = 69,667.60 : x
  2. Step 2: Convert to fraction form
    219,415.60/329,134.78 = 69,667.60/x
  3. Step 3: Cross multiply
    219,415.60x = 329,134.78 × 69,667.60
  4. Step 4: Simplify right side
    219,415.60x = 22,930,030,199.13
  5. Step 5: Solve for x
    x = 22,930,030,199.13/219,415.60
  6. Step 6: Final answer
    x = 104,505.01

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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.