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Finding the Fourth Proportional to 201,642.10, 302,117.55 and 131,485.30

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Solution

The fourth proportional to 201,642.10, 302,117.55 and 131,485.30 is: 197,002.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,642.10 : 302,117.55 = 131,485.30 : x
  2. Step 2: Convert to fraction form
    201,642.10/302,117.55 = 131,485.30/x
  3. Step 3: Cross multiply
    201,642.10x = 302,117.55 × 131,485.30
  4. Step 4: Simplify right side
    201,642.10x = 39,724,016,697.02
  5. Step 5: Solve for x
    x = 39,724,016,697.02/201,642.10
  6. Step 6: Final answer
    x = 197,002.59

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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.