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Finding the Fourth Proportional to 252,608.52, 348,599.76 and 139,431.28

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Solution

The fourth proportional to 252,608.52, 348,599.76 and 139,431.28 is: 192,415.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,608.52 : 348,599.76 = 139,431.28 : x
  2. Step 2: Convert to fraction form
    252,608.52/348,599.76 = 139,431.28/x
  3. Step 3: Cross multiply
    252,608.52x = 348,599.76 × 139,431.28
  4. Step 4: Simplify right side
    252,608.52x = 48,605,710,744.49
  5. Step 5: Solve for x
    x = 48,605,710,744.49/252,608.52
  6. Step 6: Final answer
    x = 192,415.17

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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.