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Finding the Fourth Proportional to 256,510.44, 384,765.66 and 69,521.94

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Solution

The fourth proportional to 256,510.44, 384,765.66 and 69,521.94 is: 104,282.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,510.44 : 384,765.66 = 69,521.94 : x
  2. Step 2: Convert to fraction form
    256,510.44/384,765.66 = 69,521.94/x
  3. Step 3: Cross multiply
    256,510.44x = 384,765.66 × 69,521.94
  4. Step 4: Simplify right side
    256,510.44x = 26,749,655,128.58
  5. Step 5: Solve for x
    x = 26,749,655,128.58/256,510.44
  6. Step 6: Final answer
    x = 104,282.91

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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.