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Finding the Fourth Proportional to 399,652.17, 551,291.23 and 256,250.58

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Solution

The fourth proportional to 399,652.17, 551,291.23 and 256,250.58 is: 353,479.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,652.17 : 551,291.23 = 256,250.58 : x
  2. Step 2: Convert to fraction form
    399,652.17/551,291.23 = 256,250.58/x
  3. Step 3: Cross multiply
    399,652.17x = 551,291.23 × 256,250.58
  4. Step 4: Simplify right side
    399,652.17x = 141,268,697,436.41
  5. Step 5: Solve for x
    x = 141,268,697,436.41/399,652.17
  6. Step 6: Final answer
    x = 353,479.12

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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.