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Finding the Fourth Proportional to 201,280.40, 301,728.60 and 74,886.80

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Solution

The fourth proportional to 201,280.40, 301,728.60 and 74,886.80 is: 112,258.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,280.40 : 301,728.60 = 74,886.80 : x
  2. Step 2: Convert to fraction form
    201,280.40/301,728.60 = 74,886.80/x
  3. Step 3: Cross multiply
    201,280.40x = 301,728.60 × 74,886.80
  4. Step 4: Simplify right side
    201,280.40x = 22,595,489,322.48
  5. Step 5: Solve for x
    x = 22,595,489,322.48/201,280.40
  6. Step 6: Final answer
    x = 112,258.77

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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.