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Finding the Fourth Proportional to 265,514.80, 398,272.20 and 213,026.80

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Solution

The fourth proportional to 265,514.80, 398,272.20 and 213,026.80 is: 319,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,514.80 : 398,272.20 = 213,026.80 : x
  2. Step 2: Convert to fraction form
    265,514.80/398,272.20 = 213,026.80/x
  3. Step 3: Cross multiply
    265,514.80x = 398,272.20 × 213,026.80
  4. Step 4: Simplify right side
    265,514.80x = 84,842,652,294.96
  5. Step 5: Solve for x
    x = 84,842,652,294.96/265,514.80
  6. Step 6: Final answer
    x = 319,540.20

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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.