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Finding the Fourth Proportional to 322,809.60, 484,214.40 and 265,728.90

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Solution

The fourth proportional to 322,809.60, 484,214.40 and 265,728.90 is: 398,593.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,809.60 : 484,214.40 = 265,728.90 : x
  2. Step 2: Convert to fraction form
    322,809.60/484,214.40 = 265,728.90/x
  3. Step 3: Cross multiply
    322,809.60x = 484,214.40 × 265,728.90
  4. Step 4: Simplify right side
    322,809.60x = 128,669,759,876.16
  5. Step 5: Solve for x
    x = 128,669,759,876.16/322,809.60
  6. Step 6: Final answer
    x = 398,593.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.