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Finding the Fourth Proportional to 318,631.80, 439,711.74 and 184,495.80

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Solution

The fourth proportional to 318,631.80, 439,711.74 and 184,495.80 is: 254,604.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,631.80 : 439,711.74 = 184,495.80 : x
  2. Step 2: Convert to fraction form
    318,631.80/439,711.74 = 184,495.80/x
  3. Step 3: Cross multiply
    318,631.80x = 439,711.74 × 184,495.80
  4. Step 4: Simplify right side
    318,631.80x = 81,124,969,240.69
  5. Step 5: Solve for x
    x = 81,124,969,240.69/318,631.80
  6. Step 6: Final answer
    x = 254,604.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.