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Finding the Fourth Proportional to 470,928.52, 649,889.49 and 256,069.90

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Solution

The fourth proportional to 470,928.52, 649,889.49 and 256,069.90 is: 353,380.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,928.52 : 649,889.49 = 256,069.90 : x
  2. Step 2: Convert to fraction form
    470,928.52/649,889.49 = 256,069.90/x
  3. Step 3: Cross multiply
    470,928.52x = 649,889.49 × 256,069.90
  4. Step 4: Simplify right side
    470,928.52x = 166,417,136,715.35
  5. Step 5: Solve for x
    x = 166,417,136,715.35/470,928.52
  6. Step 6: Final answer
    x = 353,380.88

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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.