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Finding the Fourth Proportional to 247,117, 341,026.70 and 139,680.62

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Solution

The fourth proportional to 247,117, 341,026.70 and 139,680.62 is: 192,762.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,117 : 341,026.70 = 139,680.62 : x
  2. Step 2: Convert to fraction form
    247,117/341,026.70 = 139,680.62/x
  3. Step 3: Cross multiply
    247,117x = 341,026.70 × 139,680.62
  4. Step 4: Simplify right side
    247,117x = 47,634,820,892.55
  5. Step 5: Solve for x
    x = 47,634,820,892.55/247,117
  6. Step 6: Final answer
    x = 192,762.22

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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.