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Finding the Fourth Proportional to 320,873.73, 442,666.72 and 193,478.55

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Solution

The fourth proportional to 320,873.73, 442,666.72 and 193,478.55 is: 266,916.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,873.73 : 442,666.72 = 193,478.55 : x
  2. Step 2: Convert to fraction form
    320,873.73/442,666.72 = 193,478.55/x
  3. Step 3: Cross multiply
    320,873.73x = 442,666.72 × 193,478.55
  4. Step 4: Simplify right side
    320,873.73x = 85,646,515,118.86
  5. Step 5: Solve for x
    x = 85,646,515,118.86/320,873.73
  6. Step 6: Final answer
    x = 266,916.57

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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.