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Finding the Fourth Proportional to 383,945.76, 529,499.76 and 240,720.48

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Solution

The fourth proportional to 383,945.76, 529,499.76 and 240,720.48 is: 331,977.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,945.76 : 529,499.76 = 240,720.48 : x
  2. Step 2: Convert to fraction form
    383,945.76/529,499.76 = 240,720.48/x
  3. Step 3: Cross multiply
    383,945.76x = 529,499.76 × 240,720.48
  4. Step 4: Simplify right side
    383,945.76x = 127,461,436,387.09
  5. Step 5: Solve for x
    x = 127,461,436,387.09/383,945.76
  6. Step 6: Final answer
    x = 331,977.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.