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Finding the Fourth Proportional to 422,550, 634,069.62 and 156,497.40

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Solution

The fourth proportional to 422,550, 634,069.62 and 156,497.40 is: 234,836.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,550 : 634,069.62 = 156,497.40 : x
  2. Step 2: Convert to fraction form
    422,550/634,069.62 = 156,497.40/x
  3. Step 3: Cross multiply
    422,550x = 634,069.62 × 156,497.40
  4. Step 4: Simplify right side
    422,550x = 99,230,246,948.99
  5. Step 5: Solve for x
    x = 99,230,246,948.99/422,550
  6. Step 6: Final answer
    x = 234,836.70

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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.