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Finding the Fourth Proportional to 247,013.32, 340,873.86 and 139,580.98

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Solution

The fourth proportional to 247,013.32, 340,873.86 and 139,580.98 is: 192,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,013.32 : 340,873.86 = 139,580.98 : x
  2. Step 2: Convert to fraction form
    247,013.32/340,873.86 = 139,580.98/x
  3. Step 3: Cross multiply
    247,013.32x = 340,873.86 × 139,580.98
  4. Step 4: Simplify right side
    247,013.32x = 47,579,507,435.18
  5. Step 5: Solve for x
    x = 47,579,507,435.18/247,013.32
  6. Step 6: Final answer
    x = 192,619.20

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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.