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Finding the Fourth Proportional to 313,286.31, 432,323.49 and 170,043.30

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Solution

The fourth proportional to 313,286.31, 432,323.49 and 170,043.30 is: 234,653.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,286.31 : 432,323.49 = 170,043.30 : x
  2. Step 2: Convert to fraction form
    313,286.31/432,323.49 = 170,043.30/x
  3. Step 3: Cross multiply
    313,286.31x = 432,323.49 × 170,043.30
  4. Step 4: Simplify right side
    313,286.31x = 73,513,712,907.12
  5. Step 5: Solve for x
    x = 73,513,712,907.12/313,286.31
  6. Step 6: Final answer
    x = 234,653.45

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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.