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Finding the Fourth Proportional to 372,790.70, 514,465.72 and 211,660.74

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Solution

The fourth proportional to 372,790.70, 514,465.72 and 211,660.74 is: 292,100.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,790.70 : 514,465.72 = 211,660.74 : x
  2. Step 2: Convert to fraction form
    372,790.70/514,465.72 = 211,660.74/x
  3. Step 3: Cross multiply
    372,790.70x = 514,465.72 × 211,660.74
  4. Step 4: Simplify right side
    372,790.70x = 108,892,193,335.16
  5. Step 5: Solve for x
    x = 108,892,193,335.16/372,790.70
  6. Step 6: Final answer
    x = 292,100.08

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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.