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Finding the Fourth Proportional to 507,339.12, 761,008.68 and 133,361.52

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Solution

The fourth proportional to 507,339.12, 761,008.68 and 133,361.52 is: 200,042.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,339.12 : 761,008.68 = 133,361.52 : x
  2. Step 2: Convert to fraction form
    507,339.12/761,008.68 = 133,361.52/x
  3. Step 3: Cross multiply
    507,339.12x = 761,008.68 × 133,361.52
  4. Step 4: Simplify right side
    507,339.12x = 101,489,274,297.99
  5. Step 5: Solve for x
    x = 101,489,274,297.99/507,339.12
  6. Step 6: Final answer
    x = 200,042.28

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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.