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Finding the Fourth Proportional to 312,211, 468,300.04 and 87,587.08

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Solution

The fourth proportional to 312,211, 468,300.04 and 87,587.08 is: 131,376.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,211 : 468,300.04 = 87,587.08 : x
  2. Step 2: Convert to fraction form
    312,211/468,300.04 = 87,587.08/x
  3. Step 3: Cross multiply
    312,211x = 468,300.04 × 87,587.08
  4. Step 4: Simplify right side
    312,211x = 41,017,033,067.48
  5. Step 5: Solve for x
    x = 41,017,033,067.48/312,211
  6. Step 6: Final answer
    x = 131,376.00

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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.