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Finding the Fourth Proportional to 630,704.72, 945,235.64 and 256,290

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Solution

The fourth proportional to 630,704.72, 945,235.64 and 256,290 is: 384,101.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,704.72 : 945,235.64 = 256,290 : x
  2. Step 2: Convert to fraction form
    630,704.72/945,235.64 = 256,290/x
  3. Step 3: Cross multiply
    630,704.72x = 945,235.64 × 256,290
  4. Step 4: Simplify right side
    630,704.72x = 242,254,442,175.60
  5. Step 5: Solve for x
    x = 242,254,442,175.60/630,704.72
  6. Step 6: Final answer
    x = 384,101.20

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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.