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Finding the Fourth Proportional to 408,196.72, 562,872 and 255,179.08

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Solution

The fourth proportional to 408,196.72, 562,872 and 255,179.08 is: 351,872.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,196.72 : 562,872 = 255,179.08 : x
  2. Step 2: Convert to fraction form
    408,196.72/562,872 = 255,179.08/x
  3. Step 3: Cross multiply
    408,196.72x = 562,872 × 255,179.08
  4. Step 4: Simplify right side
    408,196.72x = 143,633,159,117.76
  5. Step 5: Solve for x
    x = 143,633,159,117.76/408,196.72
  6. Step 6: Final answer
    x = 351,872.40

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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.