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Finding the Fourth Proportional to 331,509.78, 457,483.55 and 180,606.78

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Solution

The fourth proportional to 331,509.78, 457,483.55 and 180,606.78 is: 249,237.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,509.78 : 457,483.55 = 180,606.78 : x
  2. Step 2: Convert to fraction form
    331,509.78/457,483.55 = 180,606.78/x
  3. Step 3: Cross multiply
    331,509.78x = 457,483.55 × 180,606.78
  4. Step 4: Simplify right side
    331,509.78x = 82,624,629,965.44
  5. Step 5: Solve for x
    x = 82,624,629,965.44/331,509.78
  6. Step 6: Final answer
    x = 249,237.38

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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.