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Finding the Fourth Proportional to 421,180.40, 630,458.40 and 303,082.40

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Solution

The fourth proportional to 421,180.40, 630,458.40 and 303,082.40 is: 453,679.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,180.40 : 630,458.40 = 303,082.40 : x
  2. Step 2: Convert to fraction form
    421,180.40/630,458.40 = 303,082.40/x
  3. Step 3: Cross multiply
    421,180.40x = 630,458.40 × 303,082.40
  4. Step 4: Simplify right side
    421,180.40x = 191,080,844,972.16
  5. Step 5: Solve for x
    x = 191,080,844,972.16/421,180.40
  6. Step 6: Final answer
    x = 453,679.34

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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.