Home / 377,778.58-521,345.91-208,018.78

Finding the Fourth Proportional to 377,778.58, 521,345.91 and 208,018.78

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Solution

The fourth proportional to 377,778.58, 521,345.91 and 208,018.78 is: 287,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,778.58 : 521,345.91 = 208,018.78 : x
  2. Step 2: Convert to fraction form
    377,778.58/521,345.91 = 208,018.78/x
  3. Step 3: Cross multiply
    377,778.58x = 521,345.91 × 208,018.78
  4. Step 4: Simplify right side
    377,778.58x = 108,449,740,156.19
  5. Step 5: Solve for x
    x = 108,449,740,156.19/377,778.58
  6. Step 6: Final answer
    x = 287,072.23

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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.