Home / 389,606.04-537,664.72-215,175.78

Finding the Fourth Proportional to 389,606.04, 537,664.72 and 215,175.78

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Solution

The fourth proportional to 389,606.04, 537,664.72 and 215,175.78 is: 296,947.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,606.04 : 537,664.72 = 215,175.78 : x
  2. Step 2: Convert to fraction form
    389,606.04/537,664.72 = 215,175.78/x
  3. Step 3: Cross multiply
    389,606.04x = 537,664.72 × 215,175.78
  4. Step 4: Simplify right side
    389,606.04x = 115,692,425,504.48
  5. Step 5: Solve for x
    x = 115,692,425,504.48/389,606.04
  6. Step 6: Final answer
    x = 296,947.21

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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.