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Finding the Fourth Proportional to 286,751.90, 430,179.59 and 118,178.55

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Solution

The fourth proportional to 286,751.90, 430,179.59 and 118,178.55 is: 177,289.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,751.90 : 430,179.59 = 118,178.55 : x
  2. Step 2: Convert to fraction form
    286,751.90/430,179.59 = 118,178.55/x
  3. Step 3: Cross multiply
    286,751.90x = 430,179.59 × 118,178.55
  4. Step 4: Simplify right side
    286,751.90x = 50,838,000,481.24
  5. Step 5: Solve for x
    x = 50,838,000,481.24/286,751.90
  6. Step 6: Final answer
    x = 177,289.15

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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.