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Finding the Fourth Proportional to 470,990.88, 649,775.76 and 266,998.56

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Solution

The fourth proportional to 470,990.88, 649,775.76 and 266,998.56 is: 368,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,990.88 : 649,775.76 = 266,998.56 : x
  2. Step 2: Convert to fraction form
    470,990.88/649,775.76 = 266,998.56/x
  3. Step 3: Cross multiply
    470,990.88x = 649,775.76 × 266,998.56
  4. Step 4: Simplify right side
    470,990.88x = 173,489,192,242.91
  5. Step 5: Solve for x
    x = 173,489,192,242.91/470,990.88
  6. Step 6: Final answer
    x = 368,349.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.