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Finding the Fourth Proportional to 445,021.70, 667,597.35 and 145,429.70

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Solution

The fourth proportional to 445,021.70, 667,597.35 and 145,429.70 is: 218,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,021.70 : 667,597.35 = 145,429.70 : x
  2. Step 2: Convert to fraction form
    445,021.70/667,597.35 = 145,429.70/x
  3. Step 3: Cross multiply
    445,021.70x = 667,597.35 × 145,429.70
  4. Step 4: Simplify right side
    445,021.70x = 97,088,482,331.30
  5. Step 5: Solve for x
    x = 97,088,482,331.30/445,021.70
  6. Step 6: Final answer
    x = 218,165.73

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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.