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Finding the Fourth Proportional to 414,147.60, 621,221.40 and 366,908.40

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Solution

The fourth proportional to 414,147.60, 621,221.40 and 366,908.40 is: 550,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,147.60 : 621,221.40 = 366,908.40 : x
  2. Step 2: Convert to fraction form
    414,147.60/621,221.40 = 366,908.40/x
  3. Step 3: Cross multiply
    414,147.60x = 621,221.40 × 366,908.40
  4. Step 4: Simplify right side
    414,147.60x = 227,931,349,919.76
  5. Step 5: Solve for x
    x = 227,931,349,919.76/414,147.60
  6. Step 6: Final answer
    x = 550,362.60

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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.