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Finding the Fourth Proportional to 391,145.03, 586,622.72 and 106,836.91

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Solution

The fourth proportional to 391,145.03, 586,622.72 and 106,836.91 is: 160,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,145.03 : 586,622.72 = 106,836.91 : x
  2. Step 2: Convert to fraction form
    391,145.03/586,622.72 = 106,836.91/x
  3. Step 3: Cross multiply
    391,145.03x = 586,622.72 × 106,836.91
  4. Step 4: Simplify right side
    391,145.03x = 62,672,958,740.60
  5. Step 5: Solve for x
    x = 62,672,958,740.60/391,145.03
  6. Step 6: Final answer
    x = 160,229.46

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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.