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Finding the Fourth Proportional to 331,368.30, 457,288.20 and 180,465.30

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Solution

The fourth proportional to 331,368.30, 457,288.20 and 180,465.30 is: 249,042.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,368.30 : 457,288.20 = 180,465.30 : x
  2. Step 2: Convert to fraction form
    331,368.30/457,288.20 = 180,465.30/x
  3. Step 3: Cross multiply
    331,368.30x = 457,288.20 × 180,465.30
  4. Step 4: Simplify right side
    331,368.30x = 82,524,652,199.46
  5. Step 5: Solve for x
    x = 82,524,652,199.46/331,368.30
  6. Step 6: Final answer
    x = 249,042.08

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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.