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Finding the Fourth Proportional to 252,628.80, 348,627.81 and 139,451.55

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Solution

The fourth proportional to 252,628.80, 348,627.81 and 139,451.55 is: 192,443.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,628.80 : 348,627.81 = 139,451.55 : x
  2. Step 2: Convert to fraction form
    252,628.80/348,627.81 = 139,451.55/x
  3. Step 3: Cross multiply
    252,628.80x = 348,627.81 × 139,451.55
  4. Step 4: Simplify right side
    252,628.80x = 48,616,688,477.61
  5. Step 5: Solve for x
    x = 48,616,688,477.61/252,628.80
  6. Step 6: Final answer
    x = 192,443.18

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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.