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Finding the Fourth Proportional to 247,000.90, 340,856.82 and 139,568.64

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Solution

The fourth proportional to 247,000.90, 340,856.82 and 139,568.64 is: 192,602.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,000.90 : 340,856.82 = 139,568.64 : x
  2. Step 2: Convert to fraction form
    247,000.90/340,856.82 = 139,568.64/x
  3. Step 3: Cross multiply
    247,000.90x = 340,856.82 × 139,568.64
  4. Step 4: Simplify right side
    247,000.90x = 47,572,922,802.12
  5. Step 5: Solve for x
    x = 47,572,922,802.12/247,000.90
  6. Step 6: Final answer
    x = 192,602.22

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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.