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Finding the Fourth Proportional to 398,800.24, 550,033.12 and 255,573.60

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Solution

The fourth proportional to 398,800.24, 550,033.12 and 255,573.60 is: 352,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,800.24 : 550,033.12 = 255,573.60 : x
  2. Step 2: Convert to fraction form
    398,800.24/550,033.12 = 255,573.60/x
  3. Step 3: Cross multiply
    398,800.24x = 550,033.12 × 255,573.60
  4. Step 4: Simplify right side
    398,800.24x = 140,573,944,597.63
  5. Step 5: Solve for x
    x = 140,573,944,597.63/398,800.24
  6. Step 6: Final answer
    x = 352,492.13

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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.