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Finding the Fourth Proportional to 248,300.70, 372,451.05 and 90,534.30

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Solution

The fourth proportional to 248,300.70, 372,451.05 and 90,534.30 is: 135,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,300.70 : 372,451.05 = 90,534.30 : x
  2. Step 2: Convert to fraction form
    248,300.70/372,451.05 = 90,534.30/x
  3. Step 3: Cross multiply
    248,300.70x = 372,451.05 × 90,534.30
  4. Step 4: Simplify right side
    248,300.70x = 33,719,595,096.02
  5. Step 5: Solve for x
    x = 33,719,595,096.02/248,300.70
  6. Step 6: Final answer
    x = 135,801.45

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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.