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Finding the Fourth Proportional to 228,026.80, 342,040.20 and 115,663.60

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Solution

The fourth proportional to 228,026.80, 342,040.20 and 115,663.60 is: 173,495.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,026.80 : 342,040.20 = 115,663.60 : x
  2. Step 2: Convert to fraction form
    228,026.80/342,040.20 = 115,663.60/x
  3. Step 3: Cross multiply
    228,026.80x = 342,040.20 × 115,663.60
  4. Step 4: Simplify right side
    228,026.80x = 39,561,600,876.72
  5. Step 5: Solve for x
    x = 39,561,600,876.72/228,026.80
  6. Step 6: Final answer
    x = 173,495.40

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1.5x scale

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.