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Finding the Fourth Proportional to 248,507.56, 372,670.62 and 90,689.32

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Solution

The fourth proportional to 248,507.56, 372,670.62 and 90,689.32 is: 136,000.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,507.56 : 372,670.62 = 90,689.32 : x
  2. Step 2: Convert to fraction form
    248,507.56/372,670.62 = 90,689.32/x
  3. Step 3: Cross multiply
    248,507.56x = 372,670.62 × 90,689.32
  4. Step 4: Simplify right side
    248,507.56x = 33,797,245,111.78
  5. Step 5: Solve for x
    x = 33,797,245,111.78/248,507.56
  6. Step 6: Final answer
    x = 136,000.87

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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.