Home / 378,000.04-521,620.86-208,230.52

Finding the Fourth Proportional to 378,000.04, 521,620.86 and 208,230.52

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Solution

The fourth proportional to 378,000.04, 521,620.86 and 208,230.52 is: 287,347.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,000.04 : 521,620.86 = 208,230.52 : x
  2. Step 2: Convert to fraction form
    378,000.04/521,620.86 = 208,230.52/x
  3. Step 3: Cross multiply
    378,000.04x = 521,620.86 × 208,230.52
  4. Step 4: Simplify right side
    378,000.04x = 108,617,382,920.65
  5. Step 5: Solve for x
    x = 108,617,382,920.65/378,000.04
  6. Step 6: Final answer
    x = 287,347.54

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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.