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Finding the Fourth Proportional to 324,013.20, 485,789.40 and 124,256.40

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Solution

The fourth proportional to 324,013.20, 485,789.40 and 124,256.40 is: 186,296.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,013.20 : 485,789.40 = 124,256.40 : x
  2. Step 2: Convert to fraction form
    324,013.20/485,789.40 = 124,256.40/x
  3. Step 3: Cross multiply
    324,013.20x = 485,789.40 × 124,256.40
  4. Step 4: Simplify right side
    324,013.20x = 60,362,442,002.16
  5. Step 5: Solve for x
    x = 60,362,442,002.16/324,013.20
  6. Step 6: Final answer
    x = 186,296.24

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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.