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Finding the Fourth Proportional to 391,371.60, 540,194.76 and 364,777.68

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Solution

The fourth proportional to 391,371.60, 540,194.76 and 364,777.68 is: 503,488.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,371.60 : 540,194.76 = 364,777.68 : x
  2. Step 2: Convert to fraction form
    391,371.60/540,194.76 = 364,777.68/x
  3. Step 3: Cross multiply
    391,371.60x = 540,194.76 × 364,777.68
  4. Step 4: Simplify right side
    391,371.60x = 197,050,991,300.96
  5. Step 5: Solve for x
    x = 197,050,991,300.96/391,371.60
  6. Step 6: Final answer
    x = 503,488.22

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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.