Home / 391,845.80-540,741.20-219,763.74

Finding the Fourth Proportional to 391,845.80, 540,741.20 and 219,763.74

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Solution

The fourth proportional to 391,845.80, 540,741.20 and 219,763.74 is: 303,270.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,845.80 : 540,741.20 = 219,763.74 : x
  2. Step 2: Convert to fraction form
    391,845.80/540,741.20 = 219,763.74/x
  3. Step 3: Cross multiply
    391,845.80x = 540,741.20 × 219,763.74
  4. Step 4: Simplify right side
    391,845.80x = 118,835,308,484.09
  5. Step 5: Solve for x
    x = 118,835,308,484.09/391,845.80
  6. Step 6: Final answer
    x = 303,270.59

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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.