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Finding the Fourth Proportional to 371,172.18, 556,758 and 213,299.94

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Solution

The fourth proportional to 371,172.18, 556,758 and 213,299.94 is: 319,949.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,172.18 : 556,758 = 213,299.94 : x
  2. Step 2: Convert to fraction form
    371,172.18/556,758 = 213,299.94/x
  3. Step 3: Cross multiply
    371,172.18x = 556,758 × 213,299.94
  4. Step 4: Simplify right side
    371,172.18x = 118,756,447,994.52
  5. Step 5: Solve for x
    x = 118,756,447,994.52/371,172.18
  6. Step 6: Final answer
    x = 319,949.75

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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.