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Finding the Fourth Proportional to 370,408.38, 511,153.10 and 217,444.13

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Solution

The fourth proportional to 370,408.38, 511,153.10 and 217,444.13 is: 300,066.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,408.38 : 511,153.10 = 217,444.13 : x
  2. Step 2: Convert to fraction form
    370,408.38/511,153.10 = 217,444.13/x
  3. Step 3: Cross multiply
    370,408.38x = 511,153.10 × 217,444.13
  4. Step 4: Simplify right side
    370,408.38x = 111,147,241,126.30
  5. Step 5: Solve for x
    x = 111,147,241,126.30/370,408.38
  6. Step 6: Final answer
    x = 300,066.76

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.