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Finding the Fourth Proportional to 219,099.96, 302,542.29 and 138,669.39

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Solution

The fourth proportional to 219,099.96, 302,542.29 and 138,669.39 is: 191,480.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,099.96 : 302,542.29 = 138,669.39 : x
  2. Step 2: Convert to fraction form
    219,099.96/302,542.29 = 138,669.39/x
  3. Step 3: Cross multiply
    219,099.96x = 302,542.29 × 138,669.39
  4. Step 4: Simplify right side
    219,099.96x = 41,953,354,803.50
  5. Step 5: Solve for x
    x = 41,953,354,803.50/219,099.96
  6. Step 6: Final answer
    x = 191,480.43

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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.