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Finding the Fourth Proportional to 345,355.51, 518,103.34 and 108,643.14

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Solution

The fourth proportional to 345,355.51, 518,103.34 and 108,643.14 is: 162,986.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,355.51 : 518,103.34 = 108,643.14 : x
  2. Step 2: Convert to fraction form
    345,355.51/518,103.34 = 108,643.14/x
  3. Step 3: Cross multiply
    345,355.51x = 518,103.34 × 108,643.14
  4. Step 4: Simplify right side
    345,355.51x = 56,288,370,568.36
  5. Step 5: Solve for x
    x = 56,288,370,568.36/345,355.51
  6. Step 6: Final answer
    x = 162,986.75

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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.