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Finding the Fourth Proportional to 315,491.02, 435,374.31 and 172,250.62

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Solution

The fourth proportional to 315,491.02, 435,374.31 and 172,250.62 is: 237,704.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,491.02 : 435,374.31 = 172,250.62 : x
  2. Step 2: Convert to fraction form
    315,491.02/435,374.31 = 172,250.62/x
  3. Step 3: Cross multiply
    315,491.02x = 435,374.31 × 172,250.62
  4. Step 4: Simplify right side
    315,491.02x = 74,993,494,829.57
  5. Step 5: Solve for x
    x = 74,993,494,829.57/315,491.02
  6. Step 6: Final answer
    x = 237,704.06

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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.