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Finding the Fourth Proportional to 253,009.12, 349,138.94 and 139,825.12

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Solution

The fourth proportional to 253,009.12, 349,138.94 and 139,825.12 is: 192,951.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,009.12 : 349,138.94 = 139,825.12 : x
  2. Step 2: Convert to fraction form
    253,009.12/349,138.94 = 139,825.12/x
  3. Step 3: Cross multiply
    253,009.12x = 349,138.94 × 139,825.12
  4. Step 4: Simplify right side
    253,009.12x = 48,818,394,182.17
  5. Step 5: Solve for x
    x = 48,818,394,182.17/253,009.12
  6. Step 6: Final answer
    x = 192,951.12

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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.