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Finding the Fourth Proportional to 219,816.63, 329,552.70 and 86,796.46

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Solution

The fourth proportional to 219,816.63, 329,552.70 and 86,796.46 is: 130,126.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,816.63 : 329,552.70 = 86,796.46 : x
  2. Step 2: Convert to fraction form
    219,816.63/329,552.70 = 86,796.46/x
  3. Step 3: Cross multiply
    219,816.63x = 329,552.70 × 86,796.46
  4. Step 4: Simplify right side
    219,816.63x = 28,604,006,702.57
  5. Step 5: Solve for x
    x = 28,604,006,702.57/219,816.63
  6. Step 6: Final answer
    x = 130,126.67

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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.