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Finding the Fourth Proportional to 459,083.40, 688,625.10 and 178,418.40

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Solution

The fourth proportional to 459,083.40, 688,625.10 and 178,418.40 is: 267,627.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,083.40 : 688,625.10 = 178,418.40 : x
  2. Step 2: Convert to fraction form
    459,083.40/688,625.10 = 178,418.40/x
  3. Step 3: Cross multiply
    459,083.40x = 688,625.10 × 178,418.40
  4. Step 4: Simplify right side
    459,083.40x = 122,863,388,541.84
  5. Step 5: Solve for x
    x = 122,863,388,541.84/459,083.40
  6. Step 6: Final answer
    x = 267,627.60

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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.