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Finding the Fourth Proportional to 253,161.99, 379,826.19 and 103,528.17

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Solution

The fourth proportional to 253,161.99, 379,826.19 and 103,528.17 is: 155,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,161.99 : 379,826.19 = 103,528.17 : x
  2. Step 2: Convert to fraction form
    253,161.99/379,826.19 = 103,528.17/x
  3. Step 3: Cross multiply
    253,161.99x = 379,826.19 × 103,528.17
  4. Step 4: Simplify right side
    253,161.99x = 39,322,710,368.77
  5. Step 5: Solve for x
    x = 39,322,710,368.77/253,161.99
  6. Step 6: Final answer
    x = 155,326.28

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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.