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Finding the Fourth Proportional to 228,219.80, 342,378.30 and 70,464.20

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Solution

The fourth proportional to 228,219.80, 342,378.30 and 70,464.20 is: 105,711.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,219.80 : 342,378.30 = 70,464.20 : x
  2. Step 2: Convert to fraction form
    228,219.80/342,378.30 = 70,464.20/x
  3. Step 3: Cross multiply
    228,219.80x = 342,378.30 × 70,464.20
  4. Step 4: Simplify right side
    228,219.80x = 24,125,413,006.86
  5. Step 5: Solve for x
    x = 24,125,413,006.86/228,219.80
  6. Step 6: Final answer
    x = 105,711.31

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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.