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Finding the Fourth Proportional to 630,112.34, 943,145.40 and 330,165.20

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Solution

The fourth proportional to 630,112.34, 943,145.40 and 330,165.20 is: 494,187.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,112.34 : 943,145.40 = 330,165.20 : x
  2. Step 2: Convert to fraction form
    630,112.34/943,145.40 = 330,165.20/x
  3. Step 3: Cross multiply
    630,112.34x = 943,145.40 × 330,165.20
  4. Step 4: Simplify right side
    630,112.34x = 311,393,789,620.08
  5. Step 5: Solve for x
    x = 311,393,789,620.08/630,112.34
  6. Step 6: Final answer
    x = 494,187.73

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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.