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Finding the Fourth Proportional to 328,285.48, 453,407.43 and 220,668.61

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Solution

The fourth proportional to 328,285.48, 453,407.43 and 220,668.61 is: 304,773.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,285.48 : 453,407.43 = 220,668.61 : x
  2. Step 2: Convert to fraction form
    328,285.48/453,407.43 = 220,668.61/x
  3. Step 3: Cross multiply
    328,285.48x = 453,407.43 × 220,668.61
  4. Step 4: Simplify right side
    328,285.48x = 100,052,787,341.77
  5. Step 5: Solve for x
    x = 100,052,787,341.77/328,285.48
  6. Step 6: Final answer
    x = 304,773.72

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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.