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Finding the Fourth Proportional to 338,486.80, 507,836.31 and 203,697.94

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Solution

The fourth proportional to 338,486.80, 507,836.31 and 203,697.94 is: 305,610.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,486.80 : 507,836.31 = 203,697.94 : x
  2. Step 2: Convert to fraction form
    338,486.80/507,836.31 = 203,697.94/x
  3. Step 3: Cross multiply
    338,486.80x = 507,836.31 × 203,697.94
  4. Step 4: Simplify right side
    338,486.80x = 103,445,210,204.20
  5. Step 5: Solve for x
    x = 103,445,210,204.20/338,486.80
  6. Step 6: Final answer
    x = 305,610.77

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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.