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Finding the Fourth Proportional to 345,902.80, 519,145.80 and 168,561.40

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Solution

The fourth proportional to 345,902.80, 519,145.80 and 168,561.40 is: 252,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,902.80 : 519,145.80 = 168,561.40 : x
  2. Step 2: Convert to fraction form
    345,902.80/519,145.80 = 168,561.40/x
  3. Step 3: Cross multiply
    345,902.80x = 519,145.80 × 168,561.40
  4. Step 4: Simplify right side
    345,902.80x = 87,507,942,852.12
  5. Step 5: Solve for x
    x = 87,507,942,852.12/345,902.80
  6. Step 6: Final answer
    x = 252,984.20

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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.