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Finding the Fourth Proportional to 383,530.60, 575,295.90 and 231,315.40

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Solution

The fourth proportional to 383,530.60, 575,295.90 and 231,315.40 is: 346,973.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,530.60 : 575,295.90 = 231,315.40 : x
  2. Step 2: Convert to fraction form
    383,530.60/575,295.90 = 231,315.40/x
  3. Step 3: Cross multiply
    383,530.60x = 575,295.90 × 231,315.40
  4. Step 4: Simplify right side
    383,530.60x = 133,074,801,226.86
  5. Step 5: Solve for x
    x = 133,074,801,226.86/383,530.60
  6. Step 6: Final answer
    x = 346,973.10

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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.