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Finding the Fourth Proportional to 421,292.40, 630,626.40 and 303,194.40

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Solution

The fourth proportional to 421,292.40, 630,626.40 and 303,194.40 is: 453,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,292.40 : 630,626.40 = 303,194.40 : x
  2. Step 2: Convert to fraction form
    421,292.40/630,626.40 = 303,194.40/x
  3. Step 3: Cross multiply
    421,292.40x = 630,626.40 × 303,194.40
  4. Step 4: Simplify right side
    421,292.40x = 191,202,392,972.16
  5. Step 5: Solve for x
    x = 191,202,392,972.16/421,292.40
  6. Step 6: Final answer
    x = 453,847.24

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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.