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Finding the Fourth Proportional to 265,783.30, 398,674.95 and 133,072.90

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Solution

The fourth proportional to 265,783.30, 398,674.95 and 133,072.90 is: 199,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,783.30 : 398,674.95 = 133,072.90 : x
  2. Step 2: Convert to fraction form
    265,783.30/398,674.95 = 133,072.90/x
  3. Step 3: Cross multiply
    265,783.30x = 398,674.95 × 133,072.90
  4. Step 4: Simplify right side
    265,783.30x = 53,052,831,753.86
  5. Step 5: Solve for x
    x = 53,052,831,753.86/265,783.30
  6. Step 6: Final answer
    x = 199,609.35

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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.