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Finding the Fourth Proportional to 470,340.45, 649,073.15 and 255,480.47

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Solution

The fourth proportional to 470,340.45, 649,073.15 and 255,480.47 is: 352,564.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,340.45 : 649,073.15 = 255,480.47 : x
  2. Step 2: Convert to fraction form
    470,340.45/649,073.15 = 255,480.47/x
  3. Step 3: Cross multiply
    470,340.45x = 649,073.15 × 255,480.47
  4. Step 4: Simplify right side
    470,340.45x = 165,825,508,903.61
  5. Step 5: Solve for x
    x = 165,825,508,903.61/470,340.45
  6. Step 6: Final answer
    x = 352,564.85

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1.5x scale

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.