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Finding the Fourth Proportional to 383,762.40, 575,643.60 and 243,103.20

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Solution

The fourth proportional to 383,762.40, 575,643.60 and 243,103.20 is: 364,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,762.40 : 575,643.60 = 243,103.20 : x
  2. Step 2: Convert to fraction form
    383,762.40/575,643.60 = 243,103.20/x
  3. Step 3: Cross multiply
    383,762.40x = 575,643.60 × 243,103.20
  4. Step 4: Simplify right side
    383,762.40x = 139,940,801,219.52
  5. Step 5: Solve for x
    x = 139,940,801,219.52/383,762.40
  6. Step 6: Final answer
    x = 364,654.80

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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.