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Finding the Fourth Proportional to 320,326.86, 480,780.12 and 170,693.58

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Solution

The fourth proportional to 320,326.86, 480,780.12 and 170,693.58 is: 256,194.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,326.86 : 480,780.12 = 170,693.58 : x
  2. Step 2: Convert to fraction form
    320,326.86/480,780.12 = 170,693.58/x
  3. Step 3: Cross multiply
    320,326.86x = 480,780.12 × 170,693.58
  4. Step 4: Simplify right side
    320,326.86x = 82,066,079,875.63
  5. Step 5: Solve for x
    x = 82,066,079,875.63/320,326.86
  6. Step 6: Final answer
    x = 256,194.81

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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.