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Finding the Fourth Proportional to 321,352.40, 482,028.60 and 238,408.40

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Solution

The fourth proportional to 321,352.40, 482,028.60 and 238,408.40 is: 357,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,352.40 : 482,028.60 = 238,408.40 : x
  2. Step 2: Convert to fraction form
    321,352.40/482,028.60 = 238,408.40/x
  3. Step 3: Cross multiply
    321,352.40x = 482,028.60 × 238,408.40
  4. Step 4: Simplify right side
    321,352.40x = 114,919,667,280.24
  5. Step 5: Solve for x
    x = 114,919,667,280.24/321,352.40
  6. Step 6: Final answer
    x = 357,612.60

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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.