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Finding the Fourth Proportional to 370,443.48, 511,212.24 and 200,678.28

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Solution

The fourth proportional to 370,443.48, 511,212.24 and 200,678.28 is: 276,936.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,443.48 : 511,212.24 = 200,678.28 : x
  2. Step 2: Convert to fraction form
    370,443.48/511,212.24 = 200,678.28/x
  3. Step 3: Cross multiply
    370,443.48x = 511,212.24 × 200,678.28
  4. Step 4: Simplify right side
    370,443.48x = 102,589,193,038.15
  5. Step 5: Solve for x
    x = 102,589,193,038.15/370,443.48
  6. Step 6: Final answer
    x = 276,936.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.