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Finding the Fourth Proportional to 384,074.98, 530,020.61 and 211,992.91

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Solution

The fourth proportional to 384,074.98, 530,020.61 and 211,992.91 is: 292,548.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,074.98 : 530,020.61 = 211,992.91 : x
  2. Step 2: Convert to fraction form
    384,074.98/530,020.61 = 211,992.91/x
  3. Step 3: Cross multiply
    384,074.98x = 530,020.61 × 211,992.91
  4. Step 4: Simplify right side
    384,074.98x = 112,360,611,473.88
  5. Step 5: Solve for x
    x = 112,360,611,473.88/384,074.98
  6. Step 6: Final answer
    x = 292,548.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.