Home / 386,700.18-580,072.43-102,383.34

Finding the Fourth Proportional to 386,700.18, 580,072.43 and 102,383.34

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Solution

The fourth proportional to 386,700.18, 580,072.43 and 102,383.34 is: 153,580.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,700.18 : 580,072.43 = 102,383.34 : x
  2. Step 2: Convert to fraction form
    386,700.18/580,072.43 = 102,383.34/x
  3. Step 3: Cross multiply
    386,700.18x = 580,072.43 × 102,383.34
  4. Step 4: Simplify right side
    386,700.18x = 59,389,749,924.95
  5. Step 5: Solve for x
    x = 59,389,749,924.95/386,700.18
  6. Step 6: Final answer
    x = 153,580.87

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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.