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Finding the Fourth Proportional to 201,485.40, 302,228.10 and 142,436.40

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Solution

The fourth proportional to 201,485.40, 302,228.10 and 142,436.40 is: 213,654.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,485.40 : 302,228.10 = 142,436.40 : x
  2. Step 2: Convert to fraction form
    201,485.40/302,228.10 = 142,436.40/x
  3. Step 3: Cross multiply
    201,485.40x = 302,228.10 × 142,436.40
  4. Step 4: Simplify right side
    201,485.40x = 43,048,282,542.84
  5. Step 5: Solve for x
    x = 43,048,282,542.84/201,485.40
  6. Step 6: Final answer
    x = 213,654.60

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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.