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Finding the Fourth Proportional to 210,215.56, 315,314.52 and 97,857.16

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Solution

The fourth proportional to 210,215.56, 315,314.52 and 97,857.16 is: 146,781.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,215.56 : 315,314.52 = 97,857.16 : x
  2. Step 2: Convert to fraction form
    210,215.56/315,314.52 = 97,857.16/x
  3. Step 3: Cross multiply
    210,215.56x = 315,314.52 × 97,857.16
  4. Step 4: Simplify right side
    210,215.56x = 30,855,783,433.96
  5. Step 5: Solve for x
    x = 30,855,783,433.96/210,215.56
  6. Step 6: Final answer
    x = 146,781.63

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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.