Home / 217,621.20-326,431.80-124,136.40

Finding the Fourth Proportional to 217,621.20, 326,431.80 and 124,136.40

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Solution

The fourth proportional to 217,621.20, 326,431.80 and 124,136.40 is: 186,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,621.20 : 326,431.80 = 124,136.40 : x
  2. Step 2: Convert to fraction form
    217,621.20/326,431.80 = 124,136.40/x
  3. Step 3: Cross multiply
    217,621.20x = 326,431.80 × 124,136.40
  4. Step 4: Simplify right side
    217,621.20x = 40,522,068,497.52
  5. Step 5: Solve for x
    x = 40,522,068,497.52/217,621.20
  6. Step 6: Final answer
    x = 186,204.60

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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.