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Finding the Fourth Proportional to 200,054.20, 299,425.20 and 155,439.40

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Solution

The fourth proportional to 200,054.20, 299,425.20 and 155,439.40 is: 232,649.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,054.20 : 299,425.20 = 155,439.40 : x
  2. Step 2: Convert to fraction form
    200,054.20/299,425.20 = 155,439.40/x
  3. Step 3: Cross multiply
    200,054.20x = 299,425.20 × 155,439.40
  4. Step 4: Simplify right side
    200,054.20x = 46,542,473,432.88
  5. Step 5: Solve for x
    x = 46,542,473,432.88/200,054.20
  6. Step 6: Final answer
    x = 232,649.32

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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.