Home / 318,012.12-477,036.36-90,289.94

Finding the Fourth Proportional to 318,012.12, 477,036.36 and 90,289.94

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Solution

The fourth proportional to 318,012.12, 477,036.36 and 90,289.94 is: 135,440.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,012.12 : 477,036.36 = 90,289.94 : x
  2. Step 2: Convert to fraction form
    318,012.12/477,036.36 = 90,289.94/x
  3. Step 3: Cross multiply
    318,012.12x = 477,036.36 × 90,289.94
  4. Step 4: Simplify right side
    318,012.12x = 43,071,585,514.81
  5. Step 5: Solve for x
    x = 43,071,585,514.81/318,012.12
  6. Step 6: Final answer
    x = 135,440.08

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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.