Home / 377,905.06-521,485.05-208,139.17

Finding the Fourth Proportional to 377,905.06, 521,485.05 and 208,139.17

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Solution

The fourth proportional to 377,905.06, 521,485.05 and 208,139.17 is: 287,218.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,905.06 : 521,485.05 = 208,139.17 : x
  2. Step 2: Convert to fraction form
    377,905.06/521,485.05 = 208,139.17/x
  3. Step 3: Cross multiply
    377,905.06x = 521,485.05 × 208,139.17
  4. Step 4: Simplify right side
    377,905.06x = 108,541,465,474.41
  5. Step 5: Solve for x
    x = 108,541,465,474.41/377,905.06
  6. Step 6: Final answer
    x = 287,218.87

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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.