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Finding the Fourth Proportional to 228,657.60, 342,999.36 and 70,908.48

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Solution

The fourth proportional to 228,657.60, 342,999.36 and 70,908.48 is: 106,366.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,657.60 : 342,999.36 = 70,908.48 : x
  2. Step 2: Convert to fraction form
    228,657.60/342,999.36 = 70,908.48/x
  3. Step 3: Cross multiply
    228,657.60x = 342,999.36 × 70,908.48
  4. Step 4: Simplify right side
    228,657.60x = 24,321,563,258.57
  5. Step 5: Solve for x
    x = 24,321,563,258.57/228,657.60
  6. Step 6: Final answer
    x = 106,366.74

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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.