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Finding the Fourth Proportional to 311,550.96, 429,963 and 173,739.24

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Solution

The fourth proportional to 311,550.96, 429,963 and 173,739.24 is: 239,772.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,550.96 : 429,963 = 173,739.24 : x
  2. Step 2: Convert to fraction form
    311,550.96/429,963 = 173,739.24/x
  3. Step 3: Cross multiply
    311,550.96x = 429,963 × 173,739.24
  4. Step 4: Simplify right side
    311,550.96x = 74,701,444,848.12
  5. Step 5: Solve for x
    x = 74,701,444,848.12/311,550.96
  6. Step 6: Final answer
    x = 239,772.80

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1.5x scale

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.