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Finding the Fourth Proportional to 228,211.60, 342,317.40 and 70,439.80

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Solution

The fourth proportional to 228,211.60, 342,317.40 and 70,439.80 is: 105,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,211.60 : 342,317.40 = 70,439.80 : x
  2. Step 2: Convert to fraction form
    228,211.60/342,317.40 = 70,439.80/x
  3. Step 3: Cross multiply
    228,211.60x = 342,317.40 × 70,439.80
  4. Step 4: Simplify right side
    228,211.60x = 24,112,769,192.52
  5. Step 5: Solve for x
    x = 24,112,769,192.52/228,211.60
  6. Step 6: Final answer
    x = 105,659.70

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1.5x scale

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.