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Finding the Fourth Proportional to 326,867.40, 490,301.10 and 149,720.40

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Solution

The fourth proportional to 326,867.40, 490,301.10 and 149,720.40 is: 224,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,867.40 : 490,301.10 = 149,720.40 : x
  2. Step 2: Convert to fraction form
    326,867.40/490,301.10 = 149,720.40/x
  3. Step 3: Cross multiply
    326,867.40x = 490,301.10 × 149,720.40
  4. Step 4: Simplify right side
    326,867.40x = 73,408,076,812.44
  5. Step 5: Solve for x
    x = 73,408,076,812.44/326,867.40
  6. Step 6: Final answer
    x = 224,580.60

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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.