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Finding the Fourth Proportional to 391,337.30, 540,035.91 and 219,262.46

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Solution

The fourth proportional to 391,337.30, 540,035.91 and 219,262.46 is: 302,576.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,337.30 : 540,035.91 = 219,262.46 : x
  2. Step 2: Convert to fraction form
    391,337.30/540,035.91 = 219,262.46/x
  3. Step 3: Cross multiply
    391,337.30x = 540,035.91 × 219,262.46
  4. Step 4: Simplify right side
    391,337.30x = 118,409,599,414.76
  5. Step 5: Solve for x
    x = 118,409,599,414.76/391,337.30
  6. Step 6: Final answer
    x = 302,576.83

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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.