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Finding the Fourth Proportional to 260,049.60, 390,074.40 and 134,078.40

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Solution

The fourth proportional to 260,049.60, 390,074.40 and 134,078.40 is: 201,117.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,049.60 : 390,074.40 = 134,078.40 : x
  2. Step 2: Convert to fraction form
    260,049.60/390,074.40 = 134,078.40/x
  3. Step 3: Cross multiply
    260,049.60x = 390,074.40 × 134,078.40
  4. Step 4: Simplify right side
    260,049.60x = 52,300,551,432.96
  5. Step 5: Solve for x
    x = 52,300,551,432.96/260,049.60
  6. Step 6: Final answer
    x = 201,117.60

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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.