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Finding the Fourth Proportional to 329,252.60, 493,490.10 and 139,712.60

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Solution

The fourth proportional to 329,252.60, 493,490.10 and 139,712.60 is: 209,403.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,252.60 : 493,490.10 = 139,712.60 : x
  2. Step 2: Convert to fraction form
    329,252.60/493,490.10 = 139,712.60/x
  3. Step 3: Cross multiply
    329,252.60x = 493,490.10 × 139,712.60
  4. Step 4: Simplify right side
    329,252.60x = 68,946,784,945.26
  5. Step 5: Solve for x
    x = 68,946,784,945.26/329,252.60
  6. Step 6: Final answer
    x = 209,403.92

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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.