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Finding the Fourth Proportional to 253,953.65, 350,460 and 139,242.77

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Solution

The fourth proportional to 253,953.65, 350,460 and 139,242.77 is: 192,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,953.65 : 350,460 = 139,242.77 : x
  2. Step 2: Convert to fraction form
    253,953.65/350,460 = 139,242.77/x
  3. Step 3: Cross multiply
    253,953.65x = 350,460 × 139,242.77
  4. Step 4: Simplify right side
    253,953.65x = 48,799,021,174.20
  5. Step 5: Solve for x
    x = 48,799,021,174.20/253,953.65
  6. Step 6: Final answer
    x = 192,157.20

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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.