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Finding the Fourth Proportional to 170,479.20, 255,718.44 and 45,820.20

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Solution

The fourth proportional to 170,479.20, 255,718.44 and 45,820.20 is: 68,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,479.20 : 255,718.44 = 45,820.20 : x
  2. Step 2: Convert to fraction form
    170,479.20/255,718.44 = 45,820.20/x
  3. Step 3: Cross multiply
    170,479.20x = 255,718.44 × 45,820.20
  4. Step 4: Simplify right side
    170,479.20x = 11,717,070,064.49
  5. Step 5: Solve for x
    x = 11,717,070,064.49/170,479.20
  6. Step 6: Final answer
    x = 68,730.20

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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.