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Finding the Fourth Proportional to 318,852.63, 478,112.87 and 119,008.67

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Solution

The fourth proportional to 318,852.63, 478,112.87 and 119,008.67 is: 178,451.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,852.63 : 478,112.87 = 119,008.67 : x
  2. Step 2: Convert to fraction form
    318,852.63/478,112.87 = 119,008.67/x
  3. Step 3: Cross multiply
    318,852.63x = 478,112.87 × 119,008.67
  4. Step 4: Simplify right side
    318,852.63x = 56,899,574,675.54
  5. Step 5: Solve for x
    x = 56,899,574,675.54/318,852.63
  6. Step 6: Final answer
    x = 178,451.01

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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.