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Finding the Fourth Proportional to 200,007.20, 300,010.80 and 164,986.40

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Solution

The fourth proportional to 200,007.20, 300,010.80 and 164,986.40 is: 247,479.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,007.20 : 300,010.80 = 164,986.40 : x
  2. Step 2: Convert to fraction form
    200,007.20/300,010.80 = 164,986.40/x
  3. Step 3: Cross multiply
    200,007.20x = 300,010.80 × 164,986.40
  4. Step 4: Simplify right side
    200,007.20x = 49,497,701,853.12
  5. Step 5: Solve for x
    x = 49,497,701,853.12/200,007.20
  6. Step 6: Final answer
    x = 247,479.60

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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.