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Finding the Fourth Proportional to 340,348.60, 470,328.78 and 255,318.04

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Solution

The fourth proportional to 340,348.60, 470,328.78 and 255,318.04 is: 352,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,348.60 : 470,328.78 = 255,318.04 : x
  2. Step 2: Convert to fraction form
    340,348.60/470,328.78 = 255,318.04/x
  3. Step 3: Cross multiply
    340,348.60x = 470,328.78 × 255,318.04
  4. Step 4: Simplify right side
    340,348.60x = 120,083,422,265.19
  5. Step 5: Solve for x
    x = 120,083,422,265.19/340,348.60
  6. Step 6: Final answer
    x = 352,824.79

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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.