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Finding the Fourth Proportional to 253,119.93, 349,312.55 and 139,949.97

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Solution

The fourth proportional to 253,119.93, 349,312.55 and 139,949.97 is: 193,134.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,119.93 : 349,312.55 = 139,949.97 : x
  2. Step 2: Convert to fraction form
    253,119.93/349,312.55 = 139,949.97/x
  3. Step 3: Cross multiply
    253,119.93x = 349,312.55 × 139,949.97
  4. Step 4: Simplify right side
    253,119.93x = 48,886,280,193.37
  5. Step 5: Solve for x
    x = 48,886,280,193.37/253,119.93
  6. Step 6: Final answer
    x = 193,134.85

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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.