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Finding the Fourth Proportional to 470,540.79, 649,345.07 and 255,680.87

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Solution

The fourth proportional to 470,540.79, 649,345.07 and 255,680.87 is: 352,838.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,540.79 : 649,345.07 = 255,680.87 : x
  2. Step 2: Convert to fraction form
    470,540.79/649,345.07 = 255,680.87/x
  3. Step 3: Cross multiply
    470,540.79x = 649,345.07 × 255,680.87
  4. Step 4: Simplify right side
    470,540.79x = 166,025,112,772.77
  5. Step 5: Solve for x
    x = 166,025,112,772.77/470,540.79
  6. Step 6: Final answer
    x = 352,838.94

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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.