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Finding the Fourth Proportional to 286,648.72, 430,024.78 and 118,077.05

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Solution

The fourth proportional to 286,648.72, 430,024.78 and 118,077.05 is: 177,136.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,648.72 : 430,024.78 = 118,077.05 : x
  2. Step 2: Convert to fraction form
    286,648.72/430,024.78 = 118,077.05/x
  3. Step 3: Cross multiply
    286,648.72x = 430,024.78 × 118,077.05
  4. Step 4: Simplify right side
    286,648.72x = 50,776,057,449.30
  5. Step 5: Solve for x
    x = 50,776,057,449.30/286,648.72
  6. Step 6: Final answer
    x = 177,136.87

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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.