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Finding the Fourth Proportional to 200,028.10, 300,042.15 and 190,842.70

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Solution

The fourth proportional to 200,028.10, 300,042.15 and 190,842.70 is: 286,264.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,028.10 : 300,042.15 = 190,842.70 : x
  2. Step 2: Convert to fraction form
    200,028.10/300,042.15 = 190,842.70/x
  3. Step 3: Cross multiply
    200,028.10x = 300,042.15 × 190,842.70
  4. Step 4: Simplify right side
    200,028.10x = 57,260,854,019.81
  5. Step 5: Solve for x
    x = 57,260,854,019.81/200,028.10
  6. Step 6: Final answer
    x = 286,264.05

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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.