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Finding the Fourth Proportional to 460,671.78, 635,718.42 and 256,718.21

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Solution

The fourth proportional to 460,671.78, 635,718.42 and 256,718.21 is: 354,266.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,671.78 : 635,718.42 = 256,718.21 : x
  2. Step 2: Convert to fraction form
    460,671.78/635,718.42 = 256,718.21/x
  3. Step 3: Cross multiply
    460,671.78x = 635,718.42 × 256,718.21
  4. Step 4: Simplify right side
    460,671.78x = 163,200,491,667.84
  5. Step 5: Solve for x
    x = 163,200,491,667.84/460,671.78
  6. Step 6: Final answer
    x = 354,266.31

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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.