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Finding the Fourth Proportional to 253,873.88, 350,331.70 and 139,130.66

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Solution

The fourth proportional to 253,873.88, 350,331.70 and 139,130.66 is: 191,992.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,873.88 : 350,331.70 = 139,130.66 : x
  2. Step 2: Convert to fraction form
    253,873.88/350,331.70 = 139,130.66/x
  3. Step 3: Cross multiply
    253,873.88x = 350,331.70 × 139,130.66
  4. Step 4: Simplify right side
    253,873.88x = 48,741,878,192.61
  5. Step 5: Solve for x
    x = 48,741,878,192.61/253,873.88
  6. Step 6: Final answer
    x = 191,992.49

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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.