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Finding the Fourth Proportional to 331,528.40, 497,239.80 and 109,912.40

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Solution

The fourth proportional to 331,528.40, 497,239.80 and 109,912.40 is: 164,851.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,528.40 : 497,239.80 = 109,912.40 : x
  2. Step 2: Convert to fraction form
    331,528.40/497,239.80 = 109,912.40/x
  3. Step 3: Cross multiply
    331,528.40x = 497,239.80 × 109,912.40
  4. Step 4: Simplify right side
    331,528.40x = 54,652,819,793.52
  5. Step 5: Solve for x
    x = 54,652,819,793.52/331,528.40
  6. Step 6: Final answer
    x = 164,851.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.