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Finding the Fourth Proportional to 304,813.53, 420,848.06 and 190,266.57

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Solution

The fourth proportional to 304,813.53, 420,848.06 and 190,266.57 is: 262,696.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,813.53 : 420,848.06 = 190,266.57 : x
  2. Step 2: Convert to fraction form
    304,813.53/420,848.06 = 190,266.57/x
  3. Step 3: Cross multiply
    304,813.53x = 420,848.06 × 190,266.57
  4. Step 4: Simplify right side
    304,813.53x = 80,073,315,916.02
  5. Step 5: Solve for x
    x = 80,073,315,916.02/304,813.53
  6. Step 6: Final answer
    x = 262,696.07

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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.