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Finding the Fourth Proportional to 283,590, 391,362.44 and 156,273.80

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Solution

The fourth proportional to 283,590, 391,362.44 and 156,273.80 is: 215,662.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,590 : 391,362.44 = 156,273.80 : x
  2. Step 2: Convert to fraction form
    283,590/391,362.44 = 156,273.80/x
  3. Step 3: Cross multiply
    283,590x = 391,362.44 × 156,273.80
  4. Step 4: Simplify right side
    283,590x = 61,159,692,937.89
  5. Step 5: Solve for x
    x = 61,159,692,937.89/283,590
  6. Step 6: Final answer
    x = 215,662.38

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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.