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Finding the Fourth Proportional to 445,461.37, 668,390.74 and 205,446.22

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Solution

The fourth proportional to 445,461.37, 668,390.74 and 205,446.22 is: 308,260.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,461.37 : 668,390.74 = 205,446.22 : x
  2. Step 2: Convert to fraction form
    445,461.37/668,390.74 = 205,446.22/x
  3. Step 3: Cross multiply
    445,461.37x = 668,390.74 × 205,446.22
  4. Step 4: Simplify right side
    445,461.37x = 137,318,349,988.77
  5. Step 5: Solve for x
    x = 137,318,349,988.77/445,461.37
  6. Step 6: Final answer
    x = 308,260.96

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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.