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Finding the Fourth Proportional to 545,635.44, 818,509.68 and 208,674

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Solution

The fourth proportional to 545,635.44, 818,509.68 and 208,674 is: 313,032.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,635.44 : 818,509.68 = 208,674 : x
  2. Step 2: Convert to fraction form
    545,635.44/818,509.68 = 208,674/x
  3. Step 3: Cross multiply
    545,635.44x = 818,509.68 × 208,674
  4. Step 4: Simplify right side
    545,635.44x = 170,801,688,964.32
  5. Step 5: Solve for x
    x = 170,801,688,964.32/545,635.44
  6. Step 6: Final answer
    x = 313,032.62

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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.