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Finding the Fourth Proportional to 343,890.20, 515,908.20 and 103,984.40

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Solution

The fourth proportional to 343,890.20, 515,908.20 and 103,984.40 is: 155,998.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,890.20 : 515,908.20 = 103,984.40 : x
  2. Step 2: Convert to fraction form
    343,890.20/515,908.20 = 103,984.40/x
  3. Step 3: Cross multiply
    343,890.20x = 515,908.20 × 103,984.40
  4. Step 4: Simplify right side
    343,890.20x = 53,646,404,632.08
  5. Step 5: Solve for x
    x = 53,646,404,632.08/343,890.20
  6. Step 6: Final answer
    x = 155,998.64

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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.