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Finding the Fourth Proportional to 345,504.63, 518,330.75 and 120,872.39

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Solution

The fourth proportional to 345,504.63, 518,330.75 and 120,872.39 is: 181,334.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,504.63 : 518,330.75 = 120,872.39 : x
  2. Step 2: Convert to fraction form
    345,504.63/518,330.75 = 120,872.39/x
  3. Step 3: Cross multiply
    345,504.63x = 518,330.75 × 120,872.39
  4. Step 4: Simplify right side
    345,504.63x = 62,651,873,366.98
  5. Step 5: Solve for x
    x = 62,651,873,366.98/345,504.63
  6. Step 6: Final answer
    x = 181,334.40

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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.