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Finding the Fourth Proportional to 300,006.40, 450,009.60 and 100,357.60

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Solution

The fourth proportional to 300,006.40, 450,009.60 and 100,357.60 is: 150,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,006.40 : 450,009.60 = 100,357.60 : x
  2. Step 2: Convert to fraction form
    300,006.40/450,009.60 = 100,357.60/x
  3. Step 3: Cross multiply
    300,006.40x = 450,009.60 × 100,357.60
  4. Step 4: Simplify right side
    300,006.40x = 45,161,883,432.96
  5. Step 5: Solve for x
    x = 45,161,883,432.96/300,006.40
  6. Step 6: Final answer
    x = 150,536.40

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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.