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Finding the Fourth Proportional to 289,002.30, 433,503.45 and 122,790.30

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Solution

The fourth proportional to 289,002.30, 433,503.45 and 122,790.30 is: 184,185.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,002.30 : 433,503.45 = 122,790.30 : x
  2. Step 2: Convert to fraction form
    289,002.30/433,503.45 = 122,790.30/x
  3. Step 3: Cross multiply
    289,002.30x = 433,503.45 × 122,790.30
  4. Step 4: Simplify right side
    289,002.30x = 53,230,018,676.54
  5. Step 5: Solve for x
    x = 53,230,018,676.54/289,002.30
  6. Step 6: Final answer
    x = 184,185.45

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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.