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Finding the Fourth Proportional to 228,621.51, 342,806.99 and 70,806.15

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Solution

The fourth proportional to 228,621.51, 342,806.99 and 70,806.15 is: 106,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,621.51 : 342,806.99 = 70,806.15 : x
  2. Step 2: Convert to fraction form
    228,621.51/342,806.99 = 70,806.15/x
  3. Step 3: Cross multiply
    228,621.51x = 342,806.99 × 70,806.15
  4. Step 4: Simplify right side
    228,621.51x = 24,272,842,800.96
  5. Step 5: Solve for x
    x = 24,272,842,800.96/228,621.51
  6. Step 6: Final answer
    x = 106,170.42

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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.