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Finding the Fourth Proportional to 300,432.92, 450,637.59 and 75,790.40

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Solution

The fourth proportional to 300,432.92, 450,637.59 and 75,790.40 is: 113,682.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,432.92 : 450,637.59 = 75,790.40 : x
  2. Step 2: Convert to fraction form
    300,432.92/450,637.59 = 75,790.40/x
  3. Step 3: Cross multiply
    300,432.92x = 450,637.59 × 75,790.40
  4. Step 4: Simplify right side
    300,432.92x = 34,154,003,201.14
  5. Step 5: Solve for x
    x = 34,154,003,201.14/300,432.92
  6. Step 6: Final answer
    x = 113,682.63

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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.