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Finding the Fourth Proportional to 630,703.72, 945,234.14 and 256,289

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Solution

The fourth proportional to 630,703.72, 945,234.14 and 256,289 is: 384,099.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,703.72 : 945,234.14 = 256,289 : x
  2. Step 2: Convert to fraction form
    630,703.72/945,234.14 = 256,289/x
  3. Step 3: Cross multiply
    630,703.72x = 945,234.14 × 256,289
  4. Step 4: Simplify right side
    630,703.72x = 242,253,112,506.46
  5. Step 5: Solve for x
    x = 242,253,112,506.46/630,703.72
  6. Step 6: Final answer
    x = 384,099.70

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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.