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Finding the Fourth Proportional to 383,990.96, 575,928.12 and 147,445.04

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Solution

The fourth proportional to 383,990.96, 575,928.12 and 147,445.04 is: 221,145.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,990.96 : 575,928.12 = 147,445.04 : x
  2. Step 2: Convert to fraction form
    383,990.96/575,928.12 = 147,445.04/x
  3. Step 3: Cross multiply
    383,990.96x = 575,928.12 × 147,445.04
  4. Step 4: Simplify right side
    383,990.96x = 84,917,744,690.52
  5. Step 5: Solve for x
    x = 84,917,744,690.52/383,990.96
  6. Step 6: Final answer
    x = 221,145.17

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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.