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Finding the Fourth Proportional to 288,965.88, 433,405.08 and 78,620.22

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Solution

The fourth proportional to 288,965.88, 433,405.08 and 78,620.22 is: 117,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,965.88 : 433,405.08 = 78,620.22 : x
  2. Step 2: Convert to fraction form
    288,965.88/433,405.08 = 78,620.22/x
  3. Step 3: Cross multiply
    288,965.88x = 433,405.08 × 78,620.22
  4. Step 4: Simplify right side
    288,965.88x = 34,074,402,738.72
  5. Step 5: Solve for x
    x = 34,074,402,738.72/288,965.88
  6. Step 6: Final answer
    x = 117,918.43

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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.