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Finding the Fourth Proportional to 318,770.83, 477,797.41 and 139,007.53

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Solution

The fourth proportional to 318,770.83, 477,797.41 and 139,007.53 is: 208,354.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,770.83 : 477,797.41 = 139,007.53 : x
  2. Step 2: Convert to fraction form
    318,770.83/477,797.41 = 139,007.53/x
  3. Step 3: Cross multiply
    318,770.83x = 477,797.41 × 139,007.53
  4. Step 4: Simplify right side
    318,770.83x = 66,417,437,804.50
  5. Step 5: Solve for x
    x = 66,417,437,804.50/318,770.83
  6. Step 6: Final answer
    x = 208,354.82

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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.