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Finding the Fourth Proportional to 300,404.89, 450,681.05 and 90,042.63

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Solution

The fourth proportional to 300,404.89, 450,681.05 and 90,042.63 is: 135,086.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,404.89 : 450,681.05 = 90,042.63 : x
  2. Step 2: Convert to fraction form
    300,404.89/450,681.05 = 90,042.63/x
  3. Step 3: Cross multiply
    300,404.89x = 450,681.05 × 90,042.63
  4. Step 4: Simplify right side
    300,404.89x = 40,580,507,033.16
  5. Step 5: Solve for x
    x = 40,580,507,033.16/300,404.89
  6. Step 6: Final answer
    x = 135,086.04

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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.