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Finding the Fourth Proportional to 210,173.60, 315,260.40 and 131,530.40

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Solution

The fourth proportional to 210,173.60, 315,260.40 and 131,530.40 is: 197,295.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,173.60 : 315,260.40 = 131,530.40 : x
  2. Step 2: Convert to fraction form
    210,173.60/315,260.40 = 131,530.40/x
  3. Step 3: Cross multiply
    210,173.60x = 315,260.40 × 131,530.40
  4. Step 4: Simplify right side
    210,173.60x = 41,466,326,516.16
  5. Step 5: Solve for x
    x = 41,466,326,516.16/210,173.60
  6. Step 6: Final answer
    x = 197,295.60

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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.