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Finding the Fourth Proportional to 259,011, 388,572.08 and 146,745

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Solution

The fourth proportional to 259,011, 388,572.08 and 146,745 is: 220,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,011 : 388,572.08 = 146,745 : x
  2. Step 2: Convert to fraction form
    259,011/388,572.08 = 146,745/x
  3. Step 3: Cross multiply
    259,011x = 388,572.08 × 146,745
  4. Step 4: Simplify right side
    259,011x = 57,021,009,879.60
  5. Step 5: Solve for x
    x = 57,021,009,879.60/259,011
  6. Step 6: Final answer
    x = 220,148.99

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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.