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Finding the Fourth Proportional to 270,863.76, 403,435.77 and 256,638.54

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Solution

The fourth proportional to 270,863.76, 403,435.77 and 256,638.54 is: 382,248.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,863.76 : 403,435.77 = 256,638.54 : x
  2. Step 2: Convert to fraction form
    270,863.76/403,435.77 = 256,638.54/x
  3. Step 3: Cross multiply
    270,863.76x = 403,435.77 × 256,638.54
  4. Step 4: Simplify right side
    270,863.76x = 103,537,166,996.58
  5. Step 5: Solve for x
    x = 103,537,166,996.58/270,863.76
  6. Step 6: Final answer
    x = 382,248.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.