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Finding the Fourth Proportional to 331,342.60, 457,225.80 and 186,140.48

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Solution

The fourth proportional to 331,342.60, 457,225.80 and 186,140.48 is: 256,858.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,342.60 : 457,225.80 = 186,140.48 : x
  2. Step 2: Convert to fraction form
    331,342.60/457,225.80 = 186,140.48/x
  3. Step 3: Cross multiply
    331,342.60x = 457,225.80 × 186,140.48
  4. Step 4: Simplify right side
    331,342.60x = 85,108,229,880.38
  5. Step 5: Solve for x
    x = 85,108,229,880.38/331,342.60
  6. Step 6: Final answer
    x = 256,858.70

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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.