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Finding the Fourth Proportional to 219,779.82, 329,693.76 and 69,984.90

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Solution

The fourth proportional to 219,779.82, 329,693.76 and 69,984.90 is: 104,985.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,779.82 : 329,693.76 = 69,984.90 : x
  2. Step 2: Convert to fraction form
    219,779.82/329,693.76 = 69,984.90/x
  3. Step 3: Cross multiply
    219,779.82x = 329,693.76 × 69,984.90
  4. Step 4: Simplify right side
    219,779.82x = 23,073,584,824.22
  5. Step 5: Solve for x
    x = 23,073,584,824.22/219,779.82
  6. Step 6: Final answer
    x = 104,985.00

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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.