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Finding the Fourth Proportional to 470,387.44, 649,139.28 and 255,529.24

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Solution

The fourth proportional to 470,387.44, 649,139.28 and 255,529.24 is: 352,632.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,387.44 : 649,139.28 = 255,529.24 : x
  2. Step 2: Convert to fraction form
    470,387.44/649,139.28 = 255,529.24/x
  3. Step 3: Cross multiply
    470,387.44x = 649,139.28 × 255,529.24
  4. Step 4: Simplify right side
    470,387.44x = 165,874,066,872.55
  5. Step 5: Solve for x
    x = 165,874,066,872.55/470,387.44
  6. Step 6: Final answer
    x = 352,632.86

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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.