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Finding the Fourth Proportional to 228,478.68, 342,734.04 and 70,686.36

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Solution

The fourth proportional to 228,478.68, 342,734.04 and 70,686.36 is: 106,034.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,478.68 : 342,734.04 = 70,686.36 : x
  2. Step 2: Convert to fraction form
    228,478.68/342,734.04 = 70,686.36/x
  3. Step 3: Cross multiply
    228,478.68x = 342,734.04 × 70,686.36
  4. Step 4: Simplify right side
    228,478.68x = 24,226,621,735.69
  5. Step 5: Solve for x
    x = 24,226,621,735.69/228,478.68
  6. Step 6: Final answer
    x = 106,034.50

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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.