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Finding the Fourth Proportional to 303,533.63, 455,300.10 and 90,300.68

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Solution

The fourth proportional to 303,533.63, 455,300.10 and 90,300.68 is: 135,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,533.63 : 455,300.10 = 90,300.68 : x
  2. Step 2: Convert to fraction form
    303,533.63/455,300.10 = 90,300.68/x
  3. Step 3: Cross multiply
    303,533.63x = 455,300.10 × 90,300.68
  4. Step 4: Simplify right side
    303,533.63x = 41,113,906,357.57
  5. Step 5: Solve for x
    x = 41,113,906,357.57/303,533.63
  6. Step 6: Final answer
    x = 135,450.91

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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.