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Finding the Fourth Proportional to 220,578.44, 304,235.14 and 139,936.36

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Solution

The fourth proportional to 220,578.44, 304,235.14 and 139,936.36 is: 193,008.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,578.44 : 304,235.14 = 139,936.36 : x
  2. Step 2: Convert to fraction form
    220,578.44/304,235.14 = 139,936.36/x
  3. Step 3: Cross multiply
    220,578.44x = 304,235.14 × 139,936.36
  4. Step 4: Simplify right side
    220,578.44x = 42,573,558,075.69
  5. Step 5: Solve for x
    x = 42,573,558,075.69/220,578.44
  6. Step 6: Final answer
    x = 193,008.70

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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.