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Finding the Fourth Proportional to 312,149.40, 468,051.30 and 124,949.40

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Solution

The fourth proportional to 312,149.40, 468,051.30 and 124,949.40 is: 187,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,149.40 : 468,051.30 = 124,949.40 : x
  2. Step 2: Convert to fraction form
    312,149.40/468,051.30 = 124,949.40/x
  3. Step 3: Cross multiply
    312,149.40x = 468,051.30 × 124,949.40
  4. Step 4: Simplify right side
    312,149.40x = 58,482,729,104.22
  5. Step 5: Solve for x
    x = 58,482,729,104.22/312,149.40
  6. Step 6: Final answer
    x = 187,354.93

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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.