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Finding the Fourth Proportional to 331,322.40, 457,228.80 and 180,419.40

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Solution

The fourth proportional to 331,322.40, 457,228.80 and 180,419.40 is: 248,980.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,322.40 : 457,228.80 = 180,419.40 : x
  2. Step 2: Convert to fraction form
    331,322.40/457,228.80 = 180,419.40/x
  3. Step 3: Cross multiply
    331,322.40x = 457,228.80 × 180,419.40
  4. Step 4: Simplify right side
    331,322.40x = 82,492,945,758.72
  5. Step 5: Solve for x
    x = 82,492,945,758.72/331,322.40
  6. Step 6: Final answer
    x = 248,980.89

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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.