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Finding the Fourth Proportional to 312,518.37, 468,777.73 and 87,878.81

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Solution

The fourth proportional to 312,518.37, 468,777.73 and 87,878.81 is: 131,818.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,518.37 : 468,777.73 = 87,878.81 : x
  2. Step 2: Convert to fraction form
    312,518.37/468,777.73 = 87,878.81/x
  3. Step 3: Cross multiply
    312,518.37x = 468,777.73 × 87,878.81
  4. Step 4: Simplify right side
    312,518.37x = 41,195,627,547.05
  5. Step 5: Solve for x
    x = 41,195,627,547.05/312,518.37
  6. Step 6: Final answer
    x = 131,818.26

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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.