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Finding the Fourth Proportional to 492,389.88, 738,916.75 and 172,544.62

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Solution

The fourth proportional to 492,389.88, 738,916.75 and 172,544.62 is: 258,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,389.88 : 738,916.75 = 172,544.62 : x
  2. Step 2: Convert to fraction form
    492,389.88/738,916.75 = 172,544.62/x
  3. Step 3: Cross multiply
    492,389.88x = 738,916.75 × 172,544.62
  4. Step 4: Simplify right side
    492,389.88x = 127,496,111,256.32
  5. Step 5: Solve for x
    x = 127,496,111,256.32/492,389.88
  6. Step 6: Final answer
    x = 258,933.25

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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.