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Finding the Fourth Proportional to 445,055.07, 666,475.41 and 311,309.07

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Solution

The fourth proportional to 445,055.07, 666,475.41 and 311,309.07 is: 466,189.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,055.07 : 666,475.41 = 311,309.07 : x
  2. Step 2: Convert to fraction form
    445,055.07/666,475.41 = 311,309.07/x
  3. Step 3: Cross multiply
    445,055.07x = 666,475.41 × 311,309.07
  4. Step 4: Simplify right side
    445,055.07x = 207,479,840,064.97
  5. Step 5: Solve for x
    x = 207,479,840,064.97/445,055.07
  6. Step 6: Final answer
    x = 466,189.14

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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.