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Finding the Fourth Proportional to 331,661.21, 457,705.15 and 180,758.21

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Solution

The fourth proportional to 331,661.21, 457,705.15 and 180,758.21 is: 249,453.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,661.21 : 457,705.15 = 180,758.21 : x
  2. Step 2: Convert to fraction form
    331,661.21/457,705.15 = 180,758.21/x
  3. Step 3: Cross multiply
    331,661.21x = 457,705.15 × 180,758.21
  4. Step 4: Simplify right side
    331,661.21x = 82,733,960,881.36
  5. Step 5: Solve for x
    x = 82,733,960,881.36/331,661.21
  6. Step 6: Final answer
    x = 249,453.24

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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.