Home / 314,942.75-472,415.86-78,285.43

Finding the Fourth Proportional to 314,942.75, 472,415.86 and 78,285.43

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Solution

The fourth proportional to 314,942.75, 472,415.86 and 78,285.43 is: 117,428.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,942.75 : 472,415.86 = 78,285.43 : x
  2. Step 2: Convert to fraction form
    314,942.75/472,415.86 = 78,285.43/x
  3. Step 3: Cross multiply
    314,942.75x = 472,415.86 × 78,285.43
  4. Step 4: Simplify right side
    314,942.75x = 36,983,278,347.49
  5. Step 5: Solve for x
    x = 36,983,278,347.49/314,942.75
  6. Step 6: Final answer
    x = 117,428.58

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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.