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Finding the Fourth Proportional to 470,488.70, 649,277.17 and 255,628.71

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Solution

The fourth proportional to 470,488.70, 649,277.17 and 255,628.71 is: 352,769.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,488.70 : 649,277.17 = 255,628.71 : x
  2. Step 2: Convert to fraction form
    470,488.70/649,277.17 = 255,628.71/x
  3. Step 3: Cross multiply
    470,488.70x = 649,277.17 × 255,628.71
  4. Step 4: Simplify right side
    470,488.70x = 165,973,884,760.48
  5. Step 5: Solve for x
    x = 165,973,884,760.48/470,488.70
  6. Step 6: Final answer
    x = 352,769.12

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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.