Home / 286,157.70-428,664.29-172,242.95

Finding the Fourth Proportional to 286,157.70, 428,664.29 and 172,242.95

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Solution

The fourth proportional to 286,157.70, 428,664.29 and 172,242.95 is: 258,019.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,157.70 : 428,664.29 = 172,242.95 : x
  2. Step 2: Convert to fraction form
    286,157.70/428,664.29 = 172,242.95/x
  3. Step 3: Cross multiply
    286,157.70x = 428,664.29 × 172,242.95
  4. Step 4: Simplify right side
    286,157.70x = 73,834,399,936.38
  5. Step 5: Solve for x
    x = 73,834,399,936.38/286,157.70
  6. Step 6: Final answer
    x = 258,019.96

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.