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Finding the Fourth Proportional to 201,615.70, 302,423.55 and 131,574.10

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Solution

The fourth proportional to 201,615.70, 302,423.55 and 131,574.10 is: 197,361.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,615.70 : 302,423.55 = 131,574.10 : x
  2. Step 2: Convert to fraction form
    201,615.70/302,423.55 = 131,574.10/x
  3. Step 3: Cross multiply
    201,615.70x = 302,423.55 × 131,574.10
  4. Step 4: Simplify right side
    201,615.70x = 39,791,106,410.06
  5. Step 5: Solve for x
    x = 39,791,106,410.06/201,615.70
  6. Step 6: Final answer
    x = 197,361.15

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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.