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Finding the Fourth Proportional to 279,495.77, 385,710.86 and 158,651.87

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Solution

The fourth proportional to 279,495.77, 385,710.86 and 158,651.87 is: 218,943.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,495.77 : 385,710.86 = 158,651.87 : x
  2. Step 2: Convert to fraction form
    279,495.77/385,710.86 = 158,651.87/x
  3. Step 3: Cross multiply
    279,495.77x = 385,710.86 × 158,651.87
  4. Step 4: Simplify right side
    279,495.77x = 61,193,747,686.38
  5. Step 5: Solve for x
    x = 61,193,747,686.38/279,495.77
  6. Step 6: Final answer
    x = 218,943.38

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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.