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Finding the Fourth Proportional to 170,215, 255,322.50 and 45,552.76

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Solution

The fourth proportional to 170,215, 255,322.50 and 45,552.76 is: 68,329.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,215 : 255,322.50 = 45,552.76 : x
  2. Step 2: Convert to fraction form
    170,215/255,322.50 = 45,552.76/x
  3. Step 3: Cross multiply
    170,215x = 255,322.50 × 45,552.76
  4. Step 4: Simplify right side
    170,215x = 11,630,644,565.10
  5. Step 5: Solve for x
    x = 11,630,644,565.10/170,215
  6. Step 6: Final answer
    x = 68,329.14

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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.