Home / 387,220.50-534,360.36-212,793.56

Finding the Fourth Proportional to 387,220.50, 534,360.36 and 212,793.56

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Solution

The fourth proportional to 387,220.50, 534,360.36 and 212,793.56 is: 293,652.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,220.50 : 534,360.36 = 212,793.56 : x
  2. Step 2: Convert to fraction form
    387,220.50/534,360.36 = 212,793.56/x
  3. Step 3: Cross multiply
    387,220.50x = 534,360.36 × 212,793.56
  4. Step 4: Simplify right side
    387,220.50x = 113,708,443,327.28
  5. Step 5: Solve for x
    x = 113,708,443,327.28/387,220.50
  6. Step 6: Final answer
    x = 293,652.95

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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.