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Finding the Fourth Proportional to 331,315.12, 457,234.11 and 249,496.90

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Solution

The fourth proportional to 331,315.12, 457,234.11 and 249,496.90 is: 344,320.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,315.12 : 457,234.11 = 249,496.90 : x
  2. Step 2: Convert to fraction form
    331,315.12/457,234.11 = 249,496.90/x
  3. Step 3: Cross multiply
    331,315.12x = 457,234.11 × 249,496.90
  4. Step 4: Simplify right side
    331,315.12x = 114,078,493,019.26
  5. Step 5: Solve for x
    x = 114,078,493,019.26/331,315.12
  6. Step 6: Final answer
    x = 344,320.21

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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.