Home / 458,258.20-687,452.10-142,682.20

Finding the Fourth Proportional to 458,258.20, 687,452.10 and 142,682.20

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Solution

The fourth proportional to 458,258.20, 687,452.10 and 142,682.20 is: 214,043.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,258.20 : 687,452.10 = 142,682.20 : x
  2. Step 2: Convert to fraction form
    458,258.20/687,452.10 = 142,682.20/x
  3. Step 3: Cross multiply
    458,258.20x = 687,452.10 × 142,682.20
  4. Step 4: Simplify right side
    458,258.20x = 98,087,178,022.62
  5. Step 5: Solve for x
    x = 98,087,178,022.62/458,258.20
  6. Step 6: Final answer
    x = 214,043.48

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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.