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Finding the Fourth Proportional to 246,459.78, 340,111.89 and 139,064.76

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Solution

The fourth proportional to 246,459.78, 340,111.89 and 139,064.76 is: 191,907.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,459.78 : 340,111.89 = 139,064.76 : x
  2. Step 2: Convert to fraction form
    246,459.78/340,111.89 = 139,064.76/x
  3. Step 3: Cross multiply
    246,459.78x = 340,111.89 × 139,064.76
  4. Step 4: Simplify right side
    246,459.78x = 47,297,578,356.00
  5. Step 5: Solve for x
    x = 47,297,578,356.00/246,459.78
  6. Step 6: Final answer
    x = 191,907.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.