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Finding the Fourth Proportional to 247,720.68, 371,485.92 and 105,475.77

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Solution

The fourth proportional to 247,720.68, 371,485.92 and 105,475.77 is: 158,173.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,720.68 : 371,485.92 = 105,475.77 : x
  2. Step 2: Convert to fraction form
    247,720.68/371,485.92 = 105,475.77/x
  3. Step 3: Cross multiply
    247,720.68x = 371,485.92 × 105,475.77
  4. Step 4: Simplify right side
    247,720.68x = 39,182,763,456.16
  5. Step 5: Solve for x
    x = 39,182,763,456.16/247,720.68
  6. Step 6: Final answer
    x = 158,173.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.