Home / 383,907.20-529,656-256,663.04

Finding the Fourth Proportional to 383,907.20, 529,656 and 256,663.04

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Solution

The fourth proportional to 383,907.20, 529,656 and 256,663.04 is: 354,104.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,907.20 : 529,656 = 256,663.04 : x
  2. Step 2: Convert to fraction form
    383,907.20/529,656 = 256,663.04/x
  3. Step 3: Cross multiply
    383,907.20x = 529,656 × 256,663.04
  4. Step 4: Simplify right side
    383,907.20x = 135,943,119,114.24
  5. Step 5: Solve for x
    x = 135,943,119,114.24/383,907.20
  6. Step 6: Final answer
    x = 354,104.11

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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.