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Finding the Fourth Proportional to 199,554.90, 299,417.40 and 104,857.80

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Solution

The fourth proportional to 199,554.90, 299,417.40 and 104,857.80 is: 157,331.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,554.90 : 299,417.40 = 104,857.80 : x
  2. Step 2: Convert to fraction form
    199,554.90/299,417.40 = 104,857.80/x
  3. Step 3: Cross multiply
    199,554.90x = 299,417.40 × 104,857.80
  4. Step 4: Simplify right side
    199,554.90x = 31,396,249,845.72
  5. Step 5: Solve for x
    x = 31,396,249,845.72/199,554.90
  6. Step 6: Final answer
    x = 157,331.39

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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.