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Finding the Fourth Proportional to 391,567.26, 540,400.86 and 219,514.44

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Solution

The fourth proportional to 391,567.26, 540,400.86 and 219,514.44 is: 302,951.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,567.26 : 540,400.86 = 219,514.44 : x
  2. Step 2: Convert to fraction form
    391,567.26/540,400.86 = 219,514.44/x
  3. Step 3: Cross multiply
    391,567.26x = 540,400.86 × 219,514.44
  4. Step 4: Simplify right side
    391,567.26x = 118,625,792,158.42
  5. Step 5: Solve for x
    x = 118,625,792,158.42/391,567.26
  6. Step 6: Final answer
    x = 302,951.25

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1.5x scale

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.