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Finding the Fourth Proportional to 303,342.40, 455,013.60 and 299,405.80

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Solution

The fourth proportional to 303,342.40, 455,013.60 and 299,405.80 is: 449,108.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,342.40 : 455,013.60 = 299,405.80 : x
  2. Step 2: Convert to fraction form
    303,342.40/455,013.60 = 299,405.80/x
  3. Step 3: Cross multiply
    303,342.40x = 455,013.60 × 299,405.80
  4. Step 4: Simplify right side
    303,342.40x = 136,233,710,918.88
  5. Step 5: Solve for x
    x = 136,233,710,918.88/303,342.40
  6. Step 6: Final answer
    x = 449,108.70

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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.