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Finding the Fourth Proportional to 391,562.19, 587,576.61 and 142,263.63

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Solution

The fourth proportional to 391,562.19, 587,576.61 and 142,263.63 is: 213,480.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,562.19 : 587,576.61 = 142,263.63 : x
  2. Step 2: Convert to fraction form
    391,562.19/587,576.61 = 142,263.63/x
  3. Step 3: Cross multiply
    391,562.19x = 587,576.61 × 142,263.63
  4. Step 4: Simplify right side
    391,562.19x = 83,590,781,441.69
  5. Step 5: Solve for x
    x = 83,590,781,441.69/391,562.19
  6. Step 6: Final answer
    x = 213,480.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.