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Finding the Fourth Proportional to 318,285.91, 477,487.81 and 105,068.67

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Solution

The fourth proportional to 318,285.91, 477,487.81 and 105,068.67 is: 157,622.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,285.91 : 477,487.81 = 105,068.67 : x
  2. Step 2: Convert to fraction form
    318,285.91/477,487.81 = 105,068.67/x
  3. Step 3: Cross multiply
    318,285.91x = 477,487.81 × 105,068.67
  4. Step 4: Simplify right side
    318,285.91x = 50,169,008,875.24
  5. Step 5: Solve for x
    x = 50,169,008,875.24/318,285.91
  6. Step 6: Final answer
    x = 157,622.46

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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.