Home / 470,278.28-648,991.78-255,418.50

Finding the Fourth Proportional to 470,278.28, 648,991.78 and 255,418.50

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Solution

The fourth proportional to 470,278.28, 648,991.78 and 255,418.50 is: 352,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,278.28 : 648,991.78 = 255,418.50 : x
  2. Step 2: Convert to fraction form
    470,278.28/648,991.78 = 255,418.50/x
  3. Step 3: Cross multiply
    470,278.28x = 648,991.78 × 255,418.50
  4. Step 4: Simplify right side
    470,278.28x = 165,764,506,959.93
  5. Step 5: Solve for x
    x = 165,764,506,959.93/470,278.28
  6. Step 6: Final answer
    x = 352,481.74

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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.