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Finding the Fourth Proportional to 253,036.36, 349,190.28 and 139,859.16

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Solution

The fourth proportional to 253,036.36, 349,190.28 and 139,859.16 is: 193,005.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,036.36 : 349,190.28 = 139,859.16 : x
  2. Step 2: Convert to fraction form
    253,036.36/349,190.28 = 139,859.16/x
  3. Step 3: Cross multiply
    253,036.36x = 349,190.28 × 139,859.16
  4. Step 4: Simplify right side
    253,036.36x = 48,837,459,240.96
  5. Step 5: Solve for x
    x = 48,837,459,240.96/253,036.36
  6. Step 6: Final answer
    x = 193,005.70

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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.