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Finding the Fourth Proportional to 255,578.32, 352,689.96 and 160,136.56

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Solution

The fourth proportional to 255,578.32, 352,689.96 and 160,136.56 is: 220,983.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,578.32 : 352,689.96 = 160,136.56 : x
  2. Step 2: Convert to fraction form
    255,578.32/352,689.96 = 160,136.56/x
  3. Step 3: Cross multiply
    255,578.32x = 352,689.96 × 160,136.56
  4. Step 4: Simplify right side
    255,578.32x = 56,478,556,940.94
  5. Step 5: Solve for x
    x = 56,478,556,940.94/255,578.32
  6. Step 6: Final answer
    x = 220,983.36

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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.