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Finding the Fourth Proportional to 288,645.77, 433,039.60 and 99,108.90

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Solution

The fourth proportional to 288,645.77, 433,039.60 and 99,108.90 is: 148,687.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,645.77 : 433,039.60 = 99,108.90 : x
  2. Step 2: Convert to fraction form
    288,645.77/433,039.60 = 99,108.90/x
  3. Step 3: Cross multiply
    288,645.77x = 433,039.60 × 99,108.90
  4. Step 4: Simplify right side
    288,645.77x = 42,918,078,412.44
  5. Step 5: Solve for x
    x = 42,918,078,412.44/288,645.77
  6. Step 6: Final answer
    x = 148,687.71

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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.