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Finding the Fourth Proportional to 359,428.95, 496,005.75 and 198,299.43

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Solution

The fourth proportional to 359,428.95, 496,005.75 and 198,299.43 is: 273,649.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,428.95 : 496,005.75 = 198,299.43 : x
  2. Step 2: Convert to fraction form
    359,428.95/496,005.75 = 198,299.43/x
  3. Step 3: Cross multiply
    359,428.95x = 496,005.75 × 198,299.43
  4. Step 4: Simplify right side
    359,428.95x = 98,357,657,501.72
  5. Step 5: Solve for x
    x = 98,357,657,501.72/359,428.95
  6. Step 6: Final answer
    x = 273,649.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.