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Finding the Fourth Proportional to 336,870.90, 505,314.45 and 100,221.30

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Solution

The fourth proportional to 336,870.90, 505,314.45 and 100,221.30 is: 150,334.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,870.90 : 505,314.45 = 100,221.30 : x
  2. Step 2: Convert to fraction form
    336,870.90/505,314.45 = 100,221.30/x
  3. Step 3: Cross multiply
    336,870.90x = 505,314.45 × 100,221.30
  4. Step 4: Simplify right side
    336,870.90x = 50,643,271,087.79
  5. Step 5: Solve for x
    x = 50,643,271,087.79/336,870.90
  6. Step 6: Final answer
    x = 150,334.36

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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.