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Finding the Fourth Proportional to 405,230.40, 608,882.40 and 359,611.20

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Solution

The fourth proportional to 405,230.40, 608,882.40 and 359,611.20 is: 540,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,230.40 : 608,882.40 = 359,611.20 : x
  2. Step 2: Convert to fraction form
    405,230.40/608,882.40 = 359,611.20/x
  3. Step 3: Cross multiply
    405,230.40x = 608,882.40 × 359,611.20
  4. Step 4: Simplify right side
    405,230.40x = 218,960,930,522.88
  5. Step 5: Solve for x
    x = 218,960,930,522.88/405,230.40
  6. Step 6: Final answer
    x = 540,336.88

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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.