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Finding the Fourth Proportional to 386,875.44, 533,433.60 and 326,339.28

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Solution

The fourth proportional to 386,875.44, 533,433.60 and 326,339.28 is: 449,964.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,875.44 : 533,433.60 = 326,339.28 : x
  2. Step 2: Convert to fraction form
    386,875.44/533,433.60 = 326,339.28/x
  3. Step 3: Cross multiply
    386,875.44x = 533,433.60 × 326,339.28
  4. Step 4: Simplify right side
    386,875.44x = 174,080,336,951.81
  5. Step 5: Solve for x
    x = 174,080,336,951.81/386,875.44
  6. Step 6: Final answer
    x = 449,964.82

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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.