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Finding the Fourth Proportional to 256,767.68, 354,339.52 and 143,590.80

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Solution

The fourth proportional to 256,767.68, 354,339.52 and 143,590.80 is: 198,155.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,767.68 : 354,339.52 = 143,590.80 : x
  2. Step 2: Convert to fraction form
    256,767.68/354,339.52 = 143,590.80/x
  3. Step 3: Cross multiply
    256,767.68x = 354,339.52 × 143,590.80
  4. Step 4: Simplify right side
    256,767.68x = 50,879,895,148.42
  5. Step 5: Solve for x
    x = 50,879,895,148.42/256,767.68
  6. Step 6: Final answer
    x = 198,155.37

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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.