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Finding the Fourth Proportional to 219,816.90, 329,719.17 and 70,066.17

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Solution

The fourth proportional to 219,816.90, 329,719.17 and 70,066.17 is: 105,097.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,816.90 : 329,719.17 = 70,066.17 : x
  2. Step 2: Convert to fraction form
    219,816.90/329,719.17 = 70,066.17/x
  3. Step 3: Cross multiply
    219,816.90x = 329,719.17 × 70,066.17
  4. Step 4: Simplify right side
    219,816.90x = 23,102,159,417.48
  5. Step 5: Solve for x
    x = 23,102,159,417.48/219,816.90
  6. Step 6: Final answer
    x = 105,097.29

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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.