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Finding the Fourth Proportional to 318,127.10, 476,840.72 and 131,036.54

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Solution

The fourth proportional to 318,127.10, 476,840.72 and 131,036.54 is: 196,410.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,127.10 : 476,840.72 = 131,036.54 : x
  2. Step 2: Convert to fraction form
    318,127.10/476,840.72 = 131,036.54/x
  3. Step 3: Cross multiply
    318,127.10x = 476,840.72 × 131,036.54
  4. Step 4: Simplify right side
    318,127.10x = 62,483,558,079.91
  5. Step 5: Solve for x
    x = 62,483,558,079.91/318,127.10
  6. Step 6: Final answer
    x = 196,410.67

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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.