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Finding the Fourth Proportional to 312,317.49, 468,662.87 and 286,907.97

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Solution

The fourth proportional to 312,317.49, 468,662.87 and 286,907.97 is: 430,533.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,317.49 : 468,662.87 = 286,907.97 : x
  2. Step 2: Convert to fraction form
    312,317.49/468,662.87 = 286,907.97/x
  3. Step 3: Cross multiply
    312,317.49x = 468,662.87 × 286,907.97
  4. Step 4: Simplify right side
    312,317.49x = 134,463,110,359.56
  5. Step 5: Solve for x
    x = 134,463,110,359.56/312,317.49
  6. Step 6: Final answer
    x = 430,533.40

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1.5x scale

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.