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Finding the Fourth Proportional to 253,769, 350,215.92 and 139,047.86

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Solution

The fourth proportional to 253,769, 350,215.92 and 139,047.86 is: 191,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,769 : 350,215.92 = 139,047.86 : x
  2. Step 2: Convert to fraction form
    253,769/350,215.92 = 139,047.86/x
  3. Step 3: Cross multiply
    253,769x = 350,215.92 × 139,047.86
  4. Step 4: Simplify right side
    253,769x = 48,696,774,213.93
  5. Step 5: Solve for x
    x = 48,696,774,213.93/253,769
  6. Step 6: Final answer
    x = 191,894.10

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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.