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Finding the Fourth Proportional to 383,421.80, 575,127.30 and 173,059.40

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Solution

The fourth proportional to 383,421.80, 575,127.30 and 173,059.40 is: 259,586.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,421.80 : 575,127.30 = 173,059.40 : x
  2. Step 2: Convert to fraction form
    383,421.80/575,127.30 = 173,059.40/x
  3. Step 3: Cross multiply
    383,421.80x = 575,127.30 × 173,059.40
  4. Step 4: Simplify right side
    383,421.80x = 99,531,185,461.62
  5. Step 5: Solve for x
    x = 99,531,185,461.62/383,421.80
  6. Step 6: Final answer
    x = 259,586.66

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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.