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Finding the Fourth Proportional to 247,030.68, 340,919.64 and 139,610.64

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Solution

The fourth proportional to 247,030.68, 340,919.64 and 139,610.64 is: 192,672.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,030.68 : 340,919.64 = 139,610.64 : x
  2. Step 2: Convert to fraction form
    247,030.68/340,919.64 = 139,610.64/x
  3. Step 3: Cross multiply
    247,030.68x = 340,919.64 × 139,610.64
  4. Step 4: Simplify right side
    247,030.68x = 47,596,009,128.97
  5. Step 5: Solve for x
    x = 47,596,009,128.97/247,030.68
  6. Step 6: Final answer
    x = 192,672.46

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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.