Home / 378,075.44-521,767.32-208,309.52

Finding the Fourth Proportional to 378,075.44, 521,767.32 and 208,309.52

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Solution

The fourth proportional to 378,075.44, 521,767.32 and 208,309.52 is: 287,479.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,075.44 : 521,767.32 = 208,309.52 : x
  2. Step 2: Convert to fraction form
    378,075.44/521,767.32 = 208,309.52/x
  3. Step 3: Cross multiply
    378,075.44x = 521,767.32 × 208,309.52
  4. Step 4: Simplify right side
    378,075.44x = 108,689,099,980.89
  5. Step 5: Solve for x
    x = 108,689,099,980.89/378,075.44
  6. Step 6: Final answer
    x = 287,479.93

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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.