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Finding the Fourth Proportional to 170,756.80, 256,135.20 and 162,008.80

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Solution

The fourth proportional to 170,756.80, 256,135.20 and 162,008.80 is: 243,013.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,756.80 : 256,135.20 = 162,008.80 : x
  2. Step 2: Convert to fraction form
    170,756.80/256,135.20 = 162,008.80/x
  3. Step 3: Cross multiply
    170,756.80x = 256,135.20 × 162,008.80
  4. Step 4: Simplify right side
    170,756.80x = 41,496,156,389.76
  5. Step 5: Solve for x
    x = 41,496,156,389.76/170,756.80
  6. Step 6: Final answer
    x = 243,013.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.