Home / 276,904.46-415,356.64-66,542.40

Finding the Fourth Proportional to 276,904.46, 415,356.64 and 66,542.40

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Solution

The fourth proportional to 276,904.46, 415,356.64 and 66,542.40 is: 99,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,904.46 : 415,356.64 = 66,542.40 : x
  2. Step 2: Convert to fraction form
    276,904.46/415,356.64 = 66,542.40/x
  3. Step 3: Cross multiply
    276,904.46x = 415,356.64 × 66,542.40
  4. Step 4: Simplify right side
    276,904.46x = 27,638,825,272.04
  5. Step 5: Solve for x
    x = 27,638,825,272.04/276,904.46
  6. Step 6: Final answer
    x = 99,813.58

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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.