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Finding the Fourth Proportional to 316,467.54, 436,928.97 and 282,417.57

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Solution

The fourth proportional to 316,467.54, 436,928.97 and 282,417.57 is: 389,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,467.54 : 436,928.97 = 282,417.57 : x
  2. Step 2: Convert to fraction form
    316,467.54/436,928.97 = 282,417.57/x
  3. Step 3: Cross multiply
    316,467.54x = 436,928.97 × 282,417.57
  4. Step 4: Simplify right side
    316,467.54x = 123,396,417,970.00
  5. Step 5: Solve for x
    x = 123,396,417,970.00/316,467.54
  6. Step 6: Final answer
    x = 389,918.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.