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Finding the Fourth Proportional to 421,521.27, 581,755.55 and 237,797.21

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Solution

The fourth proportional to 421,521.27, 581,755.55 and 237,797.21 is: 328,191.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,521.27 : 581,755.55 = 237,797.21 : x
  2. Step 2: Convert to fraction form
    421,521.27/581,755.55 = 237,797.21/x
  3. Step 3: Cross multiply
    421,521.27x = 581,755.55 × 237,797.21
  4. Step 4: Simplify right side
    421,521.27x = 138,339,842,594.25
  5. Step 5: Solve for x
    x = 138,339,842,594.25/421,521.27
  6. Step 6: Final answer
    x = 328,191.84

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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.