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Finding the Fourth Proportional to 389,444.55, 584,166.83 and 256,474.95

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Solution

The fourth proportional to 389,444.55, 584,166.83 and 256,474.95 is: 384,712.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,444.55 : 584,166.83 = 256,474.95 : x
  2. Step 2: Convert to fraction form
    389,444.55/584,166.83 = 256,474.95/x
  3. Step 3: Cross multiply
    389,444.55x = 584,166.83 × 256,474.95
  4. Step 4: Simplify right side
    389,444.55x = 149,824,157,233.53
  5. Step 5: Solve for x
    x = 149,824,157,233.53/389,444.55
  6. Step 6: Final answer
    x = 384,712.43

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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.