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Finding the Fourth Proportional to 318,605.51, 477,838.94 and 105,323.03

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Solution

The fourth proportional to 318,605.51, 477,838.94 and 105,323.03 is: 157,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,605.51 : 477,838.94 = 105,323.03 : x
  2. Step 2: Convert to fraction form
    318,605.51/477,838.94 = 105,323.03/x
  3. Step 3: Cross multiply
    318,605.51x = 477,838.94 × 105,323.03
  4. Step 4: Simplify right side
    318,605.51x = 50,327,442,096.98
  5. Step 5: Solve for x
    x = 50,327,442,096.98/318,605.51
  6. Step 6: Final answer
    x = 157,961.62

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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.