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Finding the Fourth Proportional to 345,904.80, 519,148.80 and 168,563.40

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Solution

The fourth proportional to 345,904.80, 519,148.80 and 168,563.40 is: 252,987.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,904.80 : 519,148.80 = 168,563.40 : x
  2. Step 2: Convert to fraction form
    345,904.80/519,148.80 = 168,563.40/x
  3. Step 3: Cross multiply
    345,904.80x = 519,148.80 × 168,563.40
  4. Step 4: Simplify right side
    345,904.80x = 87,509,486,833.92
  5. Step 5: Solve for x
    x = 87,509,486,833.92/345,904.80
  6. Step 6: Final answer
    x = 252,987.20

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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.