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Finding the Fourth Proportional to 331,460.40, 497,190.60 and 238,839.60

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Solution

The fourth proportional to 331,460.40, 497,190.60 and 238,839.60 is: 358,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,460.40 : 497,190.60 = 238,839.60 : x
  2. Step 2: Convert to fraction form
    331,460.40/497,190.60 = 238,839.60/x
  3. Step 3: Cross multiply
    331,460.40x = 497,190.60 × 238,839.60
  4. Step 4: Simplify right side
    331,460.40x = 118,748,804,027.76
  5. Step 5: Solve for x
    x = 118,748,804,027.76/331,460.40
  6. Step 6: Final answer
    x = 358,259.40

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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.