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Finding the Fourth Proportional to 365,108.81, 546,331.03 and 215,420.81

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Solution

The fourth proportional to 365,108.81, 546,331.03 and 215,420.81 is: 322,345.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    365,108.81 : 546,331.03 = 215,420.81 : x
  2. Step 2: Convert to fraction form
    365,108.81/546,331.03 = 215,420.81/x
  3. Step 3: Cross multiply
    365,108.81x = 546,331.03 × 215,420.81
  4. Step 4: Simplify right side
    365,108.81x = 117,691,073,010.73
  5. Step 5: Solve for x
    x = 117,691,073,010.73/365,108.81
  6. Step 6: Final answer
    x = 322,345.20

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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.