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Finding the Fourth Proportional to 318,582.58, 477,606.03 and 213,079.54

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Solution

The fourth proportional to 318,582.58, 477,606.03 and 213,079.54 is: 319,440.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,582.58 : 477,606.03 = 213,079.54 : x
  2. Step 2: Convert to fraction form
    318,582.58/477,606.03 = 213,079.54/x
  3. Step 3: Cross multiply
    318,582.58x = 477,606.03 × 213,079.54
  4. Step 4: Simplify right side
    318,582.58x = 101,768,073,173.63
  5. Step 5: Solve for x
    x = 101,768,073,173.63/318,582.58
  6. Step 6: Final answer
    x = 319,440.17

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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.