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Finding the Fourth Proportional to 362,218.40, 542,809.20 and 251,280.80

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Solution

The fourth proportional to 362,218.40, 542,809.20 and 251,280.80 is: 376,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    362,218.40 : 542,809.20 = 251,280.80 : x
  2. Step 2: Convert to fraction form
    362,218.40/542,809.20 = 251,280.80/x
  3. Step 3: Cross multiply
    362,218.40x = 542,809.20 × 251,280.80
  4. Step 4: Simplify right side
    362,218.40x = 136,397,530,023.36
  5. Step 5: Solve for x
    x = 136,397,530,023.36/362,218.40
  6. Step 6: Final answer
    x = 376,561.57

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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.