Home / 321,285.15-443,376.08-178,047.57

Finding the Fourth Proportional to 321,285.15, 443,376.08 and 178,047.57

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Solution

The fourth proportional to 321,285.15, 443,376.08 and 178,047.57 is: 245,707.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,285.15 : 443,376.08 = 178,047.57 : x
  2. Step 2: Convert to fraction form
    321,285.15/443,376.08 = 178,047.57/x
  3. Step 3: Cross multiply
    321,285.15x = 443,376.08 × 178,047.57
  4. Step 4: Simplify right side
    321,285.15x = 78,942,032,749.89
  5. Step 5: Solve for x
    x = 78,942,032,749.89/321,285.15
  6. Step 6: Final answer
    x = 245,707.07

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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.