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Finding the Fourth Proportional to 256,497.72, 384,787.95 and 79,004.67

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Solution

The fourth proportional to 256,497.72, 384,787.95 and 79,004.67 is: 118,519.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,497.72 : 384,787.95 = 79,004.67 : x
  2. Step 2: Convert to fraction form
    256,497.72/384,787.95 = 79,004.67/x
  3. Step 3: Cross multiply
    256,497.72x = 384,787.95 × 79,004.67
  4. Step 4: Simplify right side
    256,497.72x = 30,400,045,009.73
  5. Step 5: Solve for x
    x = 30,400,045,009.73/256,497.72
  6. Step 6: Final answer
    x = 118,519.75

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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.