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Finding the Fourth Proportional to 260,466.60, 390,408.30 and 148,200.60

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Solution

The fourth proportional to 260,466.60, 390,408.30 and 148,200.60 is: 222,134.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,466.60 : 390,408.30 = 148,200.60 : x
  2. Step 2: Convert to fraction form
    260,466.60/390,408.30 = 148,200.60/x
  3. Step 3: Cross multiply
    260,466.60x = 390,408.30 × 148,200.60
  4. Step 4: Simplify right side
    260,466.60x = 57,858,744,304.98
  5. Step 5: Solve for x
    x = 57,858,744,304.98/260,466.60
  6. Step 6: Final answer
    x = 222,134.99

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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.