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Finding the Fourth Proportional to 318,342.91, 477,412.87 and 105,071.23

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Solution

The fourth proportional to 318,342.91, 477,412.87 and 105,071.23 is: 157,573.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,342.91 : 477,412.87 = 105,071.23 : x
  2. Step 2: Convert to fraction form
    318,342.91/477,412.87 = 105,071.23/x
  3. Step 3: Cross multiply
    318,342.91x = 477,412.87 × 105,071.23
  4. Step 4: Simplify right side
    318,342.91x = 50,162,355,757.65
  5. Step 5: Solve for x
    x = 50,162,355,757.65/318,342.91
  6. Step 6: Final answer
    x = 157,573.34

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1.5x scale

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.