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Finding the Fourth Proportional to 274,890.66, 412,400.52 and 85,341.35

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Solution

The fourth proportional to 274,890.66, 412,400.52 and 85,341.35 is: 128,032.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,890.66 : 412,400.52 = 85,341.35 : x
  2. Step 2: Convert to fraction form
    274,890.66/412,400.52 = 85,341.35/x
  3. Step 3: Cross multiply
    274,890.66x = 412,400.52 × 85,341.35
  4. Step 4: Simplify right side
    274,890.66x = 35,194,815,055.50
  5. Step 5: Solve for x
    x = 35,194,815,055.50/274,890.66
  6. Step 6: Final answer
    x = 128,032.05

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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.