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Finding the Fourth Proportional to 642,606.88, 963,836.88 and 169,329.28

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Solution

The fourth proportional to 642,606.88, 963,836.88 and 169,329.28 is: 253,974.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,606.88 : 963,836.88 = 169,329.28 : x
  2. Step 2: Convert to fraction form
    642,606.88/963,836.88 = 169,329.28/x
  3. Step 3: Cross multiply
    642,606.88x = 963,836.88 × 169,329.28
  4. Step 4: Simplify right side
    642,606.88x = 163,205,804,927.85
  5. Step 5: Solve for x
    x = 163,205,804,927.85/642,606.88
  6. Step 6: Final answer
    x = 253,974.57

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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.