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Finding the Fourth Proportional to 315,087.70, 472,631.55 and 104,758.10

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Solution

The fourth proportional to 315,087.70, 472,631.55 and 104,758.10 is: 157,137.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,087.70 : 472,631.55 = 104,758.10 : x
  2. Step 2: Convert to fraction form
    315,087.70/472,631.55 = 104,758.10/x
  3. Step 3: Cross multiply
    315,087.70x = 472,631.55 × 104,758.10
  4. Step 4: Simplify right side
    315,087.70x = 49,511,983,178.06
  5. Step 5: Solve for x
    x = 49,511,983,178.06/315,087.70
  6. Step 6: Final answer
    x = 157,137.15

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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.