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Finding the Fourth Proportional to 259,798.73, 390,056.18 and 179,639.78

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Solution

The fourth proportional to 259,798.73, 390,056.18 and 179,639.78 is: 269,707.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,798.73 : 390,056.18 = 179,639.78 : x
  2. Step 2: Convert to fraction form
    259,798.73/390,056.18 = 179,639.78/x
  3. Step 3: Cross multiply
    259,798.73x = 390,056.18 × 179,639.78
  4. Step 4: Simplify right side
    259,798.73x = 70,069,603,514.36
  5. Step 5: Solve for x
    x = 70,069,603,514.36/259,798.73
  6. Step 6: Final answer
    x = 269,707.26

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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.