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Finding the Fourth Proportional to 383,514.60, 574,615.80 and 243,109.20

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Solution

The fourth proportional to 383,514.60, 574,615.80 and 243,109.20 is: 364,247.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,514.60 : 574,615.80 = 243,109.20 : x
  2. Step 2: Convert to fraction form
    383,514.60/574,615.80 = 243,109.20/x
  3. Step 3: Cross multiply
    383,514.60x = 574,615.80 × 243,109.20
  4. Step 4: Simplify right side
    383,514.60x = 139,694,387,445.36
  5. Step 5: Solve for x
    x = 139,694,387,445.36/383,514.60
  6. Step 6: Final answer
    x = 364,247.90

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1.5x scale

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.