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Finding the Fourth Proportional to 303,403.34, 455,195.57 and 90,178.34

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Solution

The fourth proportional to 303,403.34, 455,195.57 and 90,178.34 is: 135,294.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,403.34 : 455,195.57 = 90,178.34 : x
  2. Step 2: Convert to fraction form
    303,403.34/455,195.57 = 90,178.34/x
  3. Step 3: Cross multiply
    303,403.34x = 455,195.57 × 90,178.34
  4. Step 4: Simplify right side
    303,403.34x = 41,048,778,151.08
  5. Step 5: Solve for x
    x = 41,048,778,151.08/303,403.34
  6. Step 6: Final answer
    x = 135,294.42

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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.