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Finding the Fourth Proportional to 371,988.33, 513,307.90 and 208,651.29

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Solution

The fourth proportional to 371,988.33, 513,307.90 and 208,651.29 is: 287,918.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,988.33 : 513,307.90 = 208,651.29 : x
  2. Step 2: Convert to fraction form
    371,988.33/513,307.90 = 208,651.29/x
  3. Step 3: Cross multiply
    371,988.33x = 513,307.90 × 208,651.29
  4. Step 4: Simplify right side
    371,988.33x = 107,102,355,502.19
  5. Step 5: Solve for x
    x = 107,102,355,502.19/371,988.33
  6. Step 6: Final answer
    x = 287,918.59

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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.