Home / 318,687.03-478,030.59-105,397.70

Finding the Fourth Proportional to 318,687.03, 478,030.59 and 105,397.70

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Solution

The fourth proportional to 318,687.03, 478,030.59 and 105,397.70 is: 158,096.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,687.03 : 478,030.59 = 105,397.70 : x
  2. Step 2: Convert to fraction form
    318,687.03/478,030.59 = 105,397.70/x
  3. Step 3: Cross multiply
    318,687.03x = 478,030.59 × 105,397.70
  4. Step 4: Simplify right side
    318,687.03x = 50,383,322,325.49
  5. Step 5: Solve for x
    x = 50,383,322,325.49/318,687.03
  6. Step 6: Final answer
    x = 158,096.56

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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.