Home / 445,902.30-668,853.45-209,268.90

Finding the Fourth Proportional to 445,902.30, 668,853.45 and 209,268.90

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Solution

The fourth proportional to 445,902.30, 668,853.45 and 209,268.90 is: 313,903.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,902.30 : 668,853.45 = 209,268.90 : x
  2. Step 2: Convert to fraction form
    445,902.30/668,853.45 = 209,268.90/x
  3. Step 3: Cross multiply
    445,902.30x = 668,853.45 × 209,268.90
  4. Step 4: Simplify right side
    445,902.30x = 139,970,225,742.71
  5. Step 5: Solve for x
    x = 139,970,225,742.71/445,902.30
  6. Step 6: Final answer
    x = 313,903.35

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Similar ratio
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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.