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Finding the Fourth Proportional to 423,073.54, 634,654.67 and 123,554.94

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Solution

The fourth proportional to 423,073.54, 634,654.67 and 123,554.94 is: 185,345.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,073.54 : 634,654.67 = 123,554.94 : x
  2. Step 2: Convert to fraction form
    423,073.54/634,654.67 = 123,554.94/x
  3. Step 3: Cross multiply
    423,073.54x = 634,654.67 × 123,554.94
  4. Step 4: Simplify right side
    423,073.54x = 78,414,716,674.84
  5. Step 5: Solve for x
    x = 78,414,716,674.84/423,073.54
  6. Step 6: Final answer
    x = 185,345.36

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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.