Home / 219,431.28-329,146.89-77,243.07

Finding the Fourth Proportional to 219,431.28, 329,146.89 and 77,243.07

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Solution

The fourth proportional to 219,431.28, 329,146.89 and 77,243.07 is: 115,864.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,431.28 : 329,146.89 = 77,243.07 : x
  2. Step 2: Convert to fraction form
    219,431.28/329,146.89 = 77,243.07/x
  3. Step 3: Cross multiply
    219,431.28x = 329,146.89 × 77,243.07
  4. Step 4: Simplify right side
    219,431.28x = 25,424,316,264.55
  5. Step 5: Solve for x
    x = 25,424,316,264.55/219,431.28
  6. Step 6: Final answer
    x = 115,864.59

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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.