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Finding the Fourth Proportional to 262,959.20, 394,438.80 and 156,514.40

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Solution

The fourth proportional to 262,959.20, 394,438.80 and 156,514.40 is: 234,771.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,959.20 : 394,438.80 = 156,514.40 : x
  2. Step 2: Convert to fraction form
    262,959.20/394,438.80 = 156,514.40/x
  3. Step 3: Cross multiply
    262,959.20x = 394,438.80 × 156,514.40
  4. Step 4: Simplify right side
    262,959.20x = 61,735,352,118.72
  5. Step 5: Solve for x
    x = 61,735,352,118.72/262,959.20
  6. Step 6: Final answer
    x = 234,771.60

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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.