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Finding the Fourth Proportional to 383,490.30, 575,230.05 and 173,127.90

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Solution

The fourth proportional to 383,490.30, 575,230.05 and 173,127.90 is: 259,689.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,490.30 : 575,230.05 = 173,127.90 : x
  2. Step 2: Convert to fraction form
    383,490.30/575,230.05 = 173,127.90/x
  3. Step 3: Cross multiply
    383,490.30x = 575,230.05 × 173,127.90
  4. Step 4: Simplify right side
    383,490.30x = 99,588,370,573.40
  5. Step 5: Solve for x
    x = 99,588,370,573.40/383,490.30
  6. Step 6: Final answer
    x = 259,689.41

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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.