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Finding the Fourth Proportional to 271,479.72, 405,015.25 and 256,783.08

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Solution

The fourth proportional to 271,479.72, 405,015.25 and 256,783.08 is: 383,089.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,479.72 : 405,015.25 = 256,783.08 : x
  2. Step 2: Convert to fraction form
    271,479.72/405,015.25 = 256,783.08/x
  3. Step 3: Cross multiply
    271,479.72x = 405,015.25 × 256,783.08
  4. Step 4: Simplify right side
    271,479.72x = 104,001,063,341.97
  5. Step 5: Solve for x
    x = 104,001,063,341.97/271,479.72
  6. Step 6: Final answer
    x = 383,089.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.