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Finding the Fourth Proportional to 481,011.21, 663,999.93 and 299,813.40

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Solution

The fourth proportional to 481,011.21, 663,999.93 and 299,813.40 is: 413,869.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,011.21 : 663,999.93 = 299,813.40 : x
  2. Step 2: Convert to fraction form
    481,011.21/663,999.93 = 299,813.40/x
  3. Step 3: Cross multiply
    481,011.21x = 663,999.93 × 299,813.40
  4. Step 4: Simplify right side
    481,011.21x = 199,076,076,613.06
  5. Step 5: Solve for x
    x = 199,076,076,613.06/481,011.21
  6. Step 6: Final answer
    x = 413,869.93

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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.