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Finding the Fourth Proportional to 252,756.18, 348,803.28 and 139,578.66

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Solution

The fourth proportional to 252,756.18, 348,803.28 and 139,578.66 is: 192,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,756.18 : 348,803.28 = 139,578.66 : x
  2. Step 2: Convert to fraction form
    252,756.18/348,803.28 = 139,578.66/x
  3. Step 3: Cross multiply
    252,756.18x = 348,803.28 × 139,578.66
  4. Step 4: Simplify right side
    252,756.18x = 48,685,494,426.00
  5. Step 5: Solve for x
    x = 48,685,494,426.00/252,756.18
  6. Step 6: Final answer
    x = 192,618.41

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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.