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Finding the Fourth Proportional to 228,412.80, 342,667.80 and 70,657.20

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Solution

The fourth proportional to 228,412.80, 342,667.80 and 70,657.20 is: 106,000.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,412.80 : 342,667.80 = 70,657.20 : x
  2. Step 2: Convert to fraction form
    228,412.80/342,667.80 = 70,657.20/x
  3. Step 3: Cross multiply
    228,412.80x = 342,667.80 × 70,657.20
  4. Step 4: Simplify right side
    228,412.80x = 24,211,947,278.16
  5. Step 5: Solve for x
    x = 24,211,947,278.16/228,412.80
  6. Step 6: Final answer
    x = 106,000.83

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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.