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Finding the Fourth Proportional to 200,624.10, 300,908.61 and 140,470.26

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Solution

The fourth proportional to 200,624.10, 300,908.61 and 140,470.26 is: 210,686.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,624.10 : 300,908.61 = 140,470.26 : x
  2. Step 2: Convert to fraction form
    200,624.10/300,908.61 = 140,470.26/x
  3. Step 3: Cross multiply
    200,624.10x = 300,908.61 × 140,470.26
  4. Step 4: Simplify right side
    200,624.10x = 42,268,710,682.94
  5. Step 5: Solve for x
    x = 42,268,710,682.94/200,624.10
  6. Step 6: Final answer
    x = 210,686.11

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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.