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Finding the Fourth Proportional to 247,320, 341,301.62 and 139,887.72

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Solution

The fourth proportional to 247,320, 341,301.62 and 139,887.72 is: 193,045.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,320 : 341,301.62 = 139,887.72 : x
  2. Step 2: Convert to fraction form
    247,320/341,301.62 = 139,887.72/x
  3. Step 3: Cross multiply
    247,320x = 341,301.62 × 139,887.72
  4. Step 4: Simplify right side
    247,320x = 47,743,905,803.83
  5. Step 5: Solve for x
    x = 47,743,905,803.83/247,320
  6. Step 6: Final answer
    x = 193,045.07

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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.