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Finding the Fourth Proportional to 210,483.56, 315,760.22 and 70,285.16

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Solution

The fourth proportional to 210,483.56, 315,760.22 and 70,285.16 is: 105,439.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,483.56 : 315,760.22 = 70,285.16 : x
  2. Step 2: Convert to fraction form
    210,483.56/315,760.22 = 70,285.16/x
  3. Step 3: Cross multiply
    210,483.56x = 315,760.22 × 70,285.16
  4. Step 4: Simplify right side
    210,483.56x = 22,193,257,584.34
  5. Step 5: Solve for x
    x = 22,193,257,584.34/210,483.56
  6. Step 6: Final answer
    x = 105,439.39

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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.