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Finding the Fourth Proportional to 260,164.40, 390,052.20 and 141,969.20

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Solution

The fourth proportional to 260,164.40, 390,052.20 and 141,969.20 is: 212,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,164.40 : 390,052.20 = 141,969.20 : x
  2. Step 2: Convert to fraction form
    260,164.40/390,052.20 = 141,969.20/x
  3. Step 3: Cross multiply
    260,164.40x = 390,052.20 × 141,969.20
  4. Step 4: Simplify right side
    260,164.40x = 55,375,398,792.24
  5. Step 5: Solve for x
    x = 55,375,398,792.24/260,164.40
  6. Step 6: Final answer
    x = 212,847.72

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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.