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Finding the Fourth Proportional to 247,028.68, 340,916.88 and 139,608.64

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Solution

The fourth proportional to 247,028.68, 340,916.88 and 139,608.64 is: 192,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,028.68 : 340,916.88 = 139,608.64 : x
  2. Step 2: Convert to fraction form
    247,028.68/340,916.88 = 139,608.64/x
  3. Step 3: Cross multiply
    247,028.68x = 340,916.88 × 139,608.64
  4. Step 4: Simplify right side
    247,028.68x = 47,594,941,969.84
  5. Step 5: Solve for x
    x = 47,594,941,969.84/247,028.68
  6. Step 6: Final answer
    x = 192,669.70

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1.5x scale

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.