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Finding the Fourth Proportional to 402,323.72, 603,598.56 and 118,021

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Solution

The fourth proportional to 402,323.72, 603,598.56 and 118,021 is: 177,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,323.72 : 603,598.56 = 118,021 : x
  2. Step 2: Convert to fraction form
    402,323.72/603,598.56 = 118,021/x
  3. Step 3: Cross multiply
    402,323.72x = 603,598.56 × 118,021
  4. Step 4: Simplify right side
    402,323.72x = 71,237,305,649.76
  5. Step 5: Solve for x
    x = 71,237,305,649.76/402,323.72
  6. Step 6: Final answer
    x = 177,064.64

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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.