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Finding the Fourth Proportional to 210,016.80, 315,025.20 and 177,211.80

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Solution

The fourth proportional to 210,016.80, 315,025.20 and 177,211.80 is: 265,817.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,016.80 : 315,025.20 = 177,211.80 : x
  2. Step 2: Convert to fraction form
    210,016.80/315,025.20 = 177,211.80/x
  3. Step 3: Cross multiply
    210,016.80x = 315,025.20 × 177,211.80
  4. Step 4: Simplify right side
    210,016.80x = 55,826,182,737.36
  5. Step 5: Solve for x
    x = 55,826,182,737.36/210,016.80
  6. Step 6: Final answer
    x = 265,817.70

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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.