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Finding the Fourth Proportional to 208,777.40, 288,187.52 and 123,894.44

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Solution

The fourth proportional to 208,777.40, 288,187.52 and 123,894.44 is: 171,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,777.40 : 288,187.52 = 123,894.44 : x
  2. Step 2: Convert to fraction form
    208,777.40/288,187.52 = 123,894.44/x
  3. Step 3: Cross multiply
    208,777.40x = 288,187.52 × 123,894.44
  4. Step 4: Simplify right side
    208,777.40x = 35,704,831,405.39
  5. Step 5: Solve for x
    x = 35,704,831,405.39/208,777.40
  6. Step 6: Final answer
    x = 171,018.66

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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.