Home / 454,380.36-681,693.24-138,828.66

Finding the Fourth Proportional to 454,380.36, 681,693.24 and 138,828.66

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Solution

The fourth proportional to 454,380.36, 681,693.24 and 138,828.66 is: 208,280.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,380.36 : 681,693.24 = 138,828.66 : x
  2. Step 2: Convert to fraction form
    454,380.36/681,693.24 = 138,828.66/x
  3. Step 3: Cross multiply
    454,380.36x = 681,693.24 × 138,828.66
  4. Step 4: Simplify right side
    454,380.36x = 94,638,559,040.26
  5. Step 5: Solve for x
    x = 94,638,559,040.26/454,380.36
  6. Step 6: Final answer
    x = 208,280.48

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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.