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Finding the Fourth Proportional to 383,430.60, 575,145.90 and 102,976.20

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Solution

The fourth proportional to 383,430.60, 575,145.90 and 102,976.20 is: 154,464.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,430.60 : 575,145.90 = 102,976.20 : x
  2. Step 2: Convert to fraction form
    383,430.60/575,145.90 = 102,976.20/x
  3. Step 3: Cross multiply
    383,430.60x = 575,145.90 × 102,976.20
  4. Step 4: Simplify right side
    383,430.60x = 59,226,339,227.58
  5. Step 5: Solve for x
    x = 59,226,339,227.58/383,430.60
  6. Step 6: Final answer
    x = 154,464.30

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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.