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Finding the Fourth Proportional to 429,696.80, 644,350.80 and 163,368.80

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Solution

The fourth proportional to 429,696.80, 644,350.80 and 163,368.80 is: 244,979.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,696.80 : 644,350.80 = 163,368.80 : x
  2. Step 2: Convert to fraction form
    429,696.80/644,350.80 = 163,368.80/x
  3. Step 3: Cross multiply
    429,696.80x = 644,350.80 × 163,368.80
  4. Step 4: Simplify right side
    429,696.80x = 105,266,816,975.04
  5. Step 5: Solve for x
    x = 105,266,816,975.04/429,696.80
  6. Step 6: Final answer
    x = 244,979.29

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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.