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Finding the Fourth Proportional to 402,643, 603,964.62 and 118,333.54

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Solution

The fourth proportional to 402,643, 603,964.62 and 118,333.54 is: 177,500.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,643 : 603,964.62 = 118,333.54 : x
  2. Step 2: Convert to fraction form
    402,643/603,964.62 = 118,333.54/x
  3. Step 3: Cross multiply
    402,643x = 603,964.62 × 118,333.54
  4. Step 4: Simplify right side
    402,643x = 71,469,271,519.35
  5. Step 5: Solve for x
    x = 71,469,271,519.35/402,643
  6. Step 6: Final answer
    x = 177,500.35

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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.