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Finding the Fourth Proportional to 219,419.32, 329,060.94 and 79,159.72

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Solution

The fourth proportional to 219,419.32, 329,060.94 and 79,159.72 is: 118,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,419.32 : 329,060.94 = 79,159.72 : x
  2. Step 2: Convert to fraction form
    219,419.32/329,060.94 = 79,159.72/x
  3. Step 3: Cross multiply
    219,419.32x = 329,060.94 × 79,159.72
  4. Step 4: Simplify right side
    219,419.32x = 26,048,371,873.34
  5. Step 5: Solve for x
    x = 26,048,371,873.34/219,419.32
  6. Step 6: Final answer
    x = 118,715.03

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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.