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Finding the Fourth Proportional to 210,324.60, 315,486.90 and 131,527.80

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Solution

The fourth proportional to 210,324.60, 315,486.90 and 131,527.80 is: 197,291.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,324.60 : 315,486.90 = 131,527.80 : x
  2. Step 2: Convert to fraction form
    210,324.60/315,486.90 = 131,527.80/x
  3. Step 3: Cross multiply
    210,324.60x = 315,486.90 × 131,527.80
  4. Step 4: Simplify right side
    210,324.60x = 41,495,297,885.82
  5. Step 5: Solve for x
    x = 41,495,297,885.82/210,324.60
  6. Step 6: Final answer
    x = 197,291.70

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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.