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Finding the Fourth Proportional to 458,300.60, 687,450.90 and 125,910.20

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Solution

The fourth proportional to 458,300.60, 687,450.90 and 125,910.20 is: 188,865.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,300.60 : 687,450.90 = 125,910.20 : x
  2. Step 2: Convert to fraction form
    458,300.60/687,450.90 = 125,910.20/x
  3. Step 3: Cross multiply
    458,300.60x = 687,450.90 × 125,910.20
  4. Step 4: Simplify right side
    458,300.60x = 86,557,080,309.18
  5. Step 5: Solve for x
    x = 86,557,080,309.18/458,300.60
  6. Step 6: Final answer
    x = 188,865.30

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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.