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Finding the Fourth Proportional to 484,970.31, 669,208.79 and 298,672.30

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Solution

The fourth proportional to 484,970.31, 669,208.79 and 298,672.30 is: 412,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,970.31 : 669,208.79 = 298,672.30 : x
  2. Step 2: Convert to fraction form
    484,970.31/669,208.79 = 298,672.30/x
  3. Step 3: Cross multiply
    484,970.31x = 669,208.79 × 298,672.30
  4. Step 4: Simplify right side
    484,970.31x = 199,874,130,274.83
  5. Step 5: Solve for x
    x = 199,874,130,274.83/484,970.31
  6. Step 6: Final answer
    x = 412,136.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.