Home / 389,948.64-584,922.96-140,630.64

Finding the Fourth Proportional to 389,948.64, 584,922.96 and 140,630.64

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Solution

The fourth proportional to 389,948.64, 584,922.96 and 140,630.64 is: 210,945.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,948.64 : 584,922.96 = 140,630.64 : x
  2. Step 2: Convert to fraction form
    389,948.64/584,922.96 = 140,630.64/x
  3. Step 3: Cross multiply
    389,948.64x = 584,922.96 × 140,630.64
  4. Step 4: Simplify right side
    389,948.64x = 82,258,090,215.49
  5. Step 5: Solve for x
    x = 82,258,090,215.49/389,948.64
  6. Step 6: Final answer
    x = 210,945.96

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Double scale
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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.