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Finding the Fourth Proportional to 438,469.20, 657,703.80 and 248,856.30

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Solution

The fourth proportional to 438,469.20, 657,703.80 and 248,856.30 is: 373,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,469.20 : 657,703.80 = 248,856.30 : x
  2. Step 2: Convert to fraction form
    438,469.20/657,703.80 = 248,856.30/x
  3. Step 3: Cross multiply
    438,469.20x = 657,703.80 × 248,856.30
  4. Step 4: Simplify right side
    438,469.20x = 163,673,734,163.94
  5. Step 5: Solve for x
    x = 163,673,734,163.94/438,469.20
  6. Step 6: Final answer
    x = 373,284.45

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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.