Home / 398,615.40-550,113.72-228,875.04

Finding the Fourth Proportional to 398,615.40, 550,113.72 and 228,875.04

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Solution

The fourth proportional to 398,615.40, 550,113.72 and 228,875.04 is: 315,861.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,615.40 : 550,113.72 = 228,875.04 : x
  2. Step 2: Convert to fraction form
    398,615.40/550,113.72 = 228,875.04/x
  3. Step 3: Cross multiply
    398,615.40x = 550,113.72 × 228,875.04
  4. Step 4: Simplify right side
    398,615.40x = 125,907,299,669.55
  5. Step 5: Solve for x
    x = 125,907,299,669.55/398,615.40
  6. Step 6: Final answer
    x = 315,861.60

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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.