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Finding the Fourth Proportional to 228,351.76, 342,401.88 and 70,536.40

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Solution

The fourth proportional to 228,351.76, 342,401.88 and 70,536.40 is: 105,765.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,351.76 : 342,401.88 = 70,536.40 : x
  2. Step 2: Convert to fraction form
    228,351.76/342,401.88 = 70,536.40/x
  3. Step 3: Cross multiply
    228,351.76x = 342,401.88 × 70,536.40
  4. Step 4: Simplify right side
    228,351.76x = 24,151,795,968.43
  5. Step 5: Solve for x
    x = 24,151,795,968.43/228,351.76
  6. Step 6: Final answer
    x = 105,765.75

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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.