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Finding the Fourth Proportional to 630,105.80, 945,216.30 and 256,051.40

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Solution

The fourth proportional to 630,105.80, 945,216.30 and 256,051.40 is: 384,100.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,105.80 : 945,216.30 = 256,051.40 : x
  2. Step 2: Convert to fraction form
    630,105.80/945,216.30 = 256,051.40/x
  3. Step 3: Cross multiply
    630,105.80x = 945,216.30 × 256,051.40
  4. Step 4: Simplify right side
    630,105.80x = 242,023,956,917.82
  5. Step 5: Solve for x
    x = 242,023,956,917.82/630,105.80
  6. Step 6: Final answer
    x = 384,100.51

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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.