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Finding the Fourth Proportional to 228,216.80, 342,373.80 and 70,461.20

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Solution

The fourth proportional to 228,216.80, 342,373.80 and 70,461.20 is: 105,706.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,216.80 : 342,373.80 = 70,461.20 : x
  2. Step 2: Convert to fraction form
    228,216.80/342,373.80 = 70,461.20/x
  3. Step 3: Cross multiply
    228,216.80x = 342,373.80 × 70,461.20
  4. Step 4: Simplify right side
    228,216.80x = 24,124,068,796.56
  5. Step 5: Solve for x
    x = 24,124,068,796.56/228,216.80
  6. Step 6: Final answer
    x = 105,706.81

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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.