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Finding the Fourth Proportional to 384,192.71, 530,257.45 and 220,944.80

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Solution

The fourth proportional to 384,192.71, 530,257.45 and 220,944.80 is: 304,944.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,192.71 : 530,257.45 = 220,944.80 : x
  2. Step 2: Convert to fraction form
    384,192.71/530,257.45 = 220,944.80/x
  3. Step 3: Cross multiply
    384,192.71x = 530,257.45 × 220,944.80
  4. Step 4: Simplify right side
    384,192.71x = 117,157,626,238.76
  5. Step 5: Solve for x
    x = 117,157,626,238.76/384,192.71
  6. Step 6: Final answer
    x = 304,944.95

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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.