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Finding the Fourth Proportional to 248,410.53, 372,670.74 and 90,638.46

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Solution

The fourth proportional to 248,410.53, 372,670.74 and 90,638.46 is: 135,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,410.53 : 372,670.74 = 90,638.46 : x
  2. Step 2: Convert to fraction form
    248,410.53/372,670.74 = 90,638.46/x
  3. Step 3: Cross multiply
    248,410.53x = 372,670.74 × 90,638.46
  4. Step 4: Simplify right side
    248,410.53x = 33,778,301,960.66
  5. Step 5: Solve for x
    x = 33,778,301,960.66/248,410.53
  6. Step 6: Final answer
    x = 135,977.74

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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.