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Finding the Fourth Proportional to 219,812.67, 329,202.31 and 107,139.79

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Solution

The fourth proportional to 219,812.67, 329,202.31 and 107,139.79 is: 160,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,812.67 : 329,202.31 = 107,139.79 : x
  2. Step 2: Convert to fraction form
    219,812.67/329,202.31 = 107,139.79/x
  3. Step 3: Cross multiply
    219,812.67x = 329,202.31 × 107,139.79
  4. Step 4: Simplify right side
    219,812.67x = 35,270,666,360.91
  5. Step 5: Solve for x
    x = 35,270,666,360.91/219,812.67
  6. Step 6: Final answer
    x = 160,457.84

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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.