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Finding the Fourth Proportional to 247,204.79, 341,149.80 and 139,772.51

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Solution

The fourth proportional to 247,204.79, 341,149.80 and 139,772.51 is: 192,890.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,204.79 : 341,149.80 = 139,772.51 : x
  2. Step 2: Convert to fraction form
    247,204.79/341,149.80 = 139,772.51/x
  3. Step 3: Cross multiply
    247,204.79x = 341,149.80 × 139,772.51
  4. Step 4: Simplify right side
    247,204.79x = 47,683,363,832.00
  5. Step 5: Solve for x
    x = 47,683,363,832.00/247,204.79
  6. Step 6: Final answer
    x = 192,890.13

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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.