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Finding the Fourth Proportional to 303,353.40, 455,139.45 and 292,418.40

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Solution

The fourth proportional to 303,353.40, 455,139.45 and 292,418.40 is: 438,733.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,353.40 : 455,139.45 = 292,418.40 : x
  2. Step 2: Convert to fraction form
    303,353.40/455,139.45 = 292,418.40/x
  3. Step 3: Cross multiply
    303,353.40x = 455,139.45 × 292,418.40
  4. Step 4: Simplify right side
    303,353.40x = 133,091,149,745.88
  5. Step 5: Solve for x
    x = 133,091,149,745.88/303,353.40
  6. Step 6: Final answer
    x = 438,733.01

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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.