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Finding the Fourth Proportional to 246,990.76, 340,854 and 139,558.66

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Solution

The fourth proportional to 246,990.76, 340,854 and 139,558.66 is: 192,594.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,990.76 : 340,854 = 139,558.66 : x
  2. Step 2: Convert to fraction form
    246,990.76/340,854 = 139,558.66/x
  3. Step 3: Cross multiply
    246,990.76x = 340,854 × 139,558.66
  4. Step 4: Simplify right side
    246,990.76x = 47,569,127,495.64
  5. Step 5: Solve for x
    x = 47,569,127,495.64/246,990.76
  6. Step 6: Final answer
    x = 192,594.77

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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.