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Finding the Fourth Proportional to 377,071.58, 520,356.60 and 213,758.90

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Solution

The fourth proportional to 377,071.58, 520,356.60 and 213,758.90 is: 294,986.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,071.58 : 520,356.60 = 213,758.90 : x
  2. Step 2: Convert to fraction form
    377,071.58/520,356.60 = 213,758.90/x
  3. Step 3: Cross multiply
    377,071.58x = 520,356.60 × 213,758.90
  4. Step 4: Simplify right side
    377,071.58x = 111,230,854,655.84
  5. Step 5: Solve for x
    x = 111,230,854,655.84/377,071.58
  6. Step 6: Final answer
    x = 294,986.05

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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.