Home / 391,538.81-540,584.18-300,732.75

Finding the Fourth Proportional to 391,538.81, 540,584.18 and 300,732.75

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Solution

The fourth proportional to 391,538.81, 540,584.18 and 300,732.75 is: 415,211.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,538.81 : 540,584.18 = 300,732.75 : x
  2. Step 2: Convert to fraction form
    391,538.81/540,584.18 = 300,732.75/x
  3. Step 3: Cross multiply
    391,538.81x = 540,584.18 × 300,732.75
  4. Step 4: Simplify right side
    391,538.81x = 162,571,366,681.98
  5. Step 5: Solve for x
    x = 162,571,366,681.98/391,538.81
  6. Step 6: Final answer
    x = 415,211.37

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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.