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Finding the Fourth Proportional to 422,975.98, 634,210.52 and 134,663.02

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Solution

The fourth proportional to 422,975.98, 634,210.52 and 134,663.02 is: 201,913.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,975.98 : 634,210.52 = 134,663.02 : x
  2. Step 2: Convert to fraction form
    422,975.98/634,210.52 = 134,663.02/x
  3. Step 3: Cross multiply
    422,975.98x = 634,210.52 × 134,663.02
  4. Step 4: Simplify right side
    422,975.98x = 85,404,703,938.97
  5. Step 5: Solve for x
    x = 85,404,703,938.97/422,975.98
  6. Step 6: Final answer
    x = 201,913.84

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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.