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Finding the Fourth Proportional to 331,820.90, 457,913.30 and 180,917.90

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Solution

The fourth proportional to 331,820.90, 457,913.30 and 180,917.90 is: 249,666.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,820.90 : 457,913.30 = 180,917.90 : x
  2. Step 2: Convert to fraction form
    331,820.90/457,913.30 = 180,917.90/x
  3. Step 3: Cross multiply
    331,820.90x = 457,913.30 × 180,917.90
  4. Step 4: Simplify right side
    331,820.90x = 82,844,712,618.07
  5. Step 5: Solve for x
    x = 82,844,712,618.07/331,820.90
  6. Step 6: Final answer
    x = 249,666.95

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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.