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Finding the Fourth Proportional to 313,261.87, 432,290.40 and 170,019.04

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Solution

The fourth proportional to 313,261.87, 432,290.40 and 170,019.04 is: 234,620.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,261.87 : 432,290.40 = 170,019.04 : x
  2. Step 2: Convert to fraction form
    313,261.87/432,290.40 = 170,019.04/x
  3. Step 3: Cross multiply
    313,261.87x = 432,290.40 × 170,019.04
  4. Step 4: Simplify right side
    313,261.87x = 73,497,598,809.22
  5. Step 5: Solve for x
    x = 73,497,598,809.22/313,261.87
  6. Step 6: Final answer
    x = 234,620.32

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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.