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Finding the Fourth Proportional to 262,305.40, 393,458.10 and 256,473.40

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Solution

The fourth proportional to 262,305.40, 393,458.10 and 256,473.40 is: 384,710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,305.40 : 393,458.10 = 256,473.40 : x
  2. Step 2: Convert to fraction form
    262,305.40/393,458.10 = 256,473.40/x
  3. Step 3: Cross multiply
    262,305.40x = 393,458.10 × 256,473.40
  4. Step 4: Simplify right side
    262,305.40x = 100,911,536,664.54
  5. Step 5: Solve for x
    x = 100,911,536,664.54/262,305.40
  6. Step 6: Final answer
    x = 384,710.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.