Home / 380,553.19-525,180.71-210,787.31

Finding the Fourth Proportional to 380,553.19, 525,180.71 and 210,787.31

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Solution

The fourth proportional to 380,553.19, 525,180.71 and 210,787.31 is: 290,896.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,553.19 : 525,180.71 = 210,787.31 : x
  2. Step 2: Convert to fraction form
    380,553.19/525,180.71 = 210,787.31/x
  3. Step 3: Cross multiply
    380,553.19x = 525,180.71 × 210,787.31
  4. Step 4: Simplify right side
    380,553.19x = 110,701,430,964.71
  5. Step 5: Solve for x
    x = 110,701,430,964.71/380,553.19
  6. Step 6: Final answer
    x = 290,896.08

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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.