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Finding the Fourth Proportional to 423,062.84, 634,638.75 and 123,544.25

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Solution

The fourth proportional to 423,062.84, 634,638.75 and 123,544.25 is: 185,329.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,062.84 : 634,638.75 = 123,544.25 : x
  2. Step 2: Convert to fraction form
    423,062.84/634,638.75 = 123,544.25/x
  3. Step 3: Cross multiply
    423,062.84x = 634,638.75 × 123,544.25
  4. Step 4: Simplify right side
    423,062.84x = 78,405,969,512.99
  5. Step 5: Solve for x
    x = 78,405,969,512.99/423,062.84
  6. Step 6: Final answer
    x = 185,329.37

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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.