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Finding the Fourth Proportional to 219,062.40, 328,593.60 and 149,078.40

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Solution

The fourth proportional to 219,062.40, 328,593.60 and 149,078.40 is: 223,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,062.40 : 328,593.60 = 149,078.40 : x
  2. Step 2: Convert to fraction form
    219,062.40/328,593.60 = 149,078.40/x
  3. Step 3: Cross multiply
    219,062.40x = 328,593.60 × 149,078.40
  4. Step 4: Simplify right side
    219,062.40x = 48,986,208,138.24
  5. Step 5: Solve for x
    x = 48,986,208,138.24/219,062.40
  6. Step 6: Final answer
    x = 223,617.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.