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Finding the Fourth Proportional to 315,747.78, 473,625.84 and 105,385.64

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Solution

The fourth proportional to 315,747.78, 473,625.84 and 105,385.64 is: 158,079.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,747.78 : 473,625.84 = 105,385.64 : x
  2. Step 2: Convert to fraction form
    315,747.78/473,625.84 = 105,385.64/x
  3. Step 3: Cross multiply
    315,747.78x = 473,625.84 × 105,385.64
  4. Step 4: Simplify right side
    315,747.78x = 49,913,362,268.94
  5. Step 5: Solve for x
    x = 49,913,362,268.94/315,747.78
  6. Step 6: Final answer
    x = 158,079.85

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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.