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Finding the Fourth Proportional to 338,464.44, 507,710.68 and 279,189.72

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Solution

The fourth proportional to 338,464.44, 507,710.68 and 279,189.72 is: 418,796.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,464.44 : 507,710.68 = 279,189.72 : x
  2. Step 2: Convert to fraction form
    338,464.44/507,710.68 = 279,189.72/x
  3. Step 3: Cross multiply
    338,464.44x = 507,710.68 × 279,189.72
  4. Step 4: Simplify right side
    338,464.44x = 141,747,602,590.21
  5. Step 5: Solve for x
    x = 141,747,602,590.21/338,464.44
  6. Step 6: Final answer
    x = 418,796.14

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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.