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Finding the Fourth Proportional to 324,862.20, 487,220.40 and 213,325.20

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Solution

The fourth proportional to 324,862.20, 487,220.40 and 213,325.20 is: 319,939.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,862.20 : 487,220.40 = 213,325.20 : x
  2. Step 2: Convert to fraction form
    324,862.20/487,220.40 = 213,325.20/x
  3. Step 3: Cross multiply
    324,862.20x = 487,220.40 × 213,325.20
  4. Step 4: Simplify right side
    324,862.20x = 103,936,389,274.08
  5. Step 5: Solve for x
    x = 103,936,389,274.08/324,862.20
  6. Step 6: Final answer
    x = 319,939.93

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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.