Home / 260,147.51-390,258.46-80,248.13

Finding the Fourth Proportional to 260,147.51, 390,258.46 and 80,248.13

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Solution

The fourth proportional to 260,147.51, 390,258.46 and 80,248.13 is: 120,383.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,147.51 : 390,258.46 = 80,248.13 : x
  2. Step 2: Convert to fraction form
    260,147.51/390,258.46 = 80,248.13/x
  3. Step 3: Cross multiply
    260,147.51x = 390,258.46 × 80,248.13
  4. Step 4: Simplify right side
    260,147.51x = 31,317,509,680.39
  5. Step 5: Solve for x
    x = 31,317,509,680.39/260,147.51
  6. Step 6: Final answer
    x = 120,383.66

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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.