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Finding the Fourth Proportional to 488,018.40, 731,444.40 and 251,239.20

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Solution

The fourth proportional to 488,018.40, 731,444.40 and 251,239.20 is: 376,558.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,018.40 : 731,444.40 = 251,239.20 : x
  2. Step 2: Convert to fraction form
    488,018.40/731,444.40 = 251,239.20/x
  3. Step 3: Cross multiply
    488,018.40x = 731,444.40 × 251,239.20
  4. Step 4: Simplify right side
    488,018.40x = 183,767,505,900.48
  5. Step 5: Solve for x
    x = 183,767,505,900.48/488,018.40
  6. Step 6: Final answer
    x = 376,558.56

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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.