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Finding the Fourth Proportional to 165,630.84, 248,369.82 and 53,290.20

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Solution

The fourth proportional to 165,630.84, 248,369.82 and 53,290.20 is: 79,910.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,630.84 : 248,369.82 = 53,290.20 : x
  2. Step 2: Convert to fraction form
    165,630.84/248,369.82 = 53,290.20/x
  3. Step 3: Cross multiply
    165,630.84x = 248,369.82 × 53,290.20
  4. Step 4: Simplify right side
    165,630.84x = 13,235,677,381.76
  5. Step 5: Solve for x
    x = 13,235,677,381.76/165,630.84
  6. Step 6: Final answer
    x = 79,910.71

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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.