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Finding the Fourth Proportional to 398,894.94, 550,425.60 and 243,924.12

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Solution

The fourth proportional to 398,894.94, 550,425.60 and 243,924.12 is: 336,585.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,894.94 : 550,425.60 = 243,924.12 : x
  2. Step 2: Convert to fraction form
    398,894.94/550,425.60 = 243,924.12/x
  3. Step 3: Cross multiply
    398,894.94x = 550,425.60 × 243,924.12
  4. Step 4: Simplify right side
    398,894.94x = 134,262,080,105.47
  5. Step 5: Solve for x
    x = 134,262,080,105.47/398,894.94
  6. Step 6: Final answer
    x = 336,585.07

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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.