Home / 377,905.50-521,509.59-208,139.63

Finding the Fourth Proportional to 377,905.50, 521,509.59 and 208,139.63

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Solution

The fourth proportional to 377,905.50, 521,509.59 and 208,139.63 is: 287,232.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,905.50 : 521,509.59 = 208,139.63 : x
  2. Step 2: Convert to fraction form
    377,905.50/521,509.59 = 208,139.63/x
  3. Step 3: Cross multiply
    377,905.50x = 521,509.59 × 208,139.63
  4. Step 4: Simplify right side
    377,905.50x = 108,546,810,496.50
  5. Step 5: Solve for x
    x = 108,546,810,496.50/377,905.50
  6. Step 6: Final answer
    x = 287,232.68

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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.