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Finding the Fourth Proportional to 398,615.37, 550,113.72 and 228,875.01

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Solution

The fourth proportional to 398,615.37, 550,113.72 and 228,875.01 is: 315,861.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,615.37 : 550,113.72 = 228,875.01 : x
  2. Step 2: Convert to fraction form
    398,615.37/550,113.72 = 228,875.01/x
  3. Step 3: Cross multiply
    398,615.37x = 550,113.72 × 228,875.01
  4. Step 4: Simplify right side
    398,615.37x = 125,907,283,166.14
  5. Step 5: Solve for x
    x = 125,907,283,166.14/398,615.37
  6. Step 6: Final answer
    x = 315,861.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.