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Finding the Fourth Proportional to 248,001.40, 372,147.90 and 90,245.80

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Solution

The fourth proportional to 248,001.40, 372,147.90 and 90,245.80 is: 135,421.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,001.40 : 372,147.90 = 90,245.80 : x
  2. Step 2: Convert to fraction form
    248,001.40/372,147.90 = 90,245.80/x
  3. Step 3: Cross multiply
    248,001.40x = 372,147.90 × 90,245.80
  4. Step 4: Simplify right side
    248,001.40x = 33,584,784,953.82
  5. Step 5: Solve for x
    x = 33,584,784,953.82/248,001.40
  6. Step 6: Final answer
    x = 135,421.76

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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.