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Finding the Fourth Proportional to 307,999.42, 425,015.19 and 178,916.52

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Solution

The fourth proportional to 307,999.42, 425,015.19 and 178,916.52 is: 246,890.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,999.42 : 425,015.19 = 178,916.52 : x
  2. Step 2: Convert to fraction form
    307,999.42/425,015.19 = 178,916.52/x
  3. Step 3: Cross multiply
    307,999.42x = 425,015.19 × 178,916.52
  4. Step 4: Simplify right side
    307,999.42x = 76,042,238,741.94
  5. Step 5: Solve for x
    x = 76,042,238,741.94/307,999.42
  6. Step 6: Final answer
    x = 246,890.85

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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.