Home / 377,810.31-521,377.40-205,725.60

Finding the Fourth Proportional to 377,810.31, 521,377.40 and 205,725.60

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Solution

The fourth proportional to 377,810.31, 521,377.40 and 205,725.60 is: 283,900.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,810.31 : 521,377.40 = 205,725.60 : x
  2. Step 2: Convert to fraction form
    377,810.31/521,377.40 = 205,725.60/x
  3. Step 3: Cross multiply
    377,810.31x = 521,377.40 × 205,725.60
  4. Step 4: Simplify right side
    377,810.31x = 107,260,677,412.81
  5. Step 5: Solve for x
    x = 107,260,677,412.81/377,810.31
  6. Step 6: Final answer
    x = 283,900.87

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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.