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Finding the Fourth Proportional to 228,659.20, 342,988.80 and 70,903.60

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Solution

The fourth proportional to 228,659.20, 342,988.80 and 70,903.60 is: 106,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,659.20 : 342,988.80 = 70,903.60 : x
  2. Step 2: Convert to fraction form
    228,659.20/342,988.80 = 70,903.60/x
  3. Step 3: Cross multiply
    228,659.20x = 342,988.80 × 70,903.60
  4. Step 4: Simplify right side
    228,659.20x = 24,319,140,679.68
  5. Step 5: Solve for x
    x = 24,319,140,679.68/228,659.20
  6. Step 6: Final answer
    x = 106,355.40

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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.