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Finding the Fourth Proportional to 286,388.15, 428,950.56 and 179,423.87

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Solution

The fourth proportional to 286,388.15, 428,950.56 and 179,423.87 is: 268,740.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,388.15 : 428,950.56 = 179,423.87 : x
  2. Step 2: Convert to fraction form
    286,388.15/428,950.56 = 179,423.87/x
  3. Step 3: Cross multiply
    286,388.15x = 428,950.56 × 179,423.87
  4. Step 4: Simplify right side
    286,388.15x = 76,963,969,513.87
  5. Step 5: Solve for x
    x = 76,963,969,513.87/286,388.15
  6. Step 6: Final answer
    x = 268,740.06

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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.