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Finding the Fourth Proportional to 375,072.88, 517,555.12 and 298,786.32

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Solution

The fourth proportional to 375,072.88, 517,555.12 and 298,786.32 is: 412,288.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,072.88 : 517,555.12 = 298,786.32 : x
  2. Step 2: Convert to fraction form
    375,072.88/517,555.12 = 298,786.32/x
  3. Step 3: Cross multiply
    375,072.88x = 517,555.12 × 298,786.32
  4. Step 4: Simplify right side
    375,072.88x = 154,638,389,701.96
  5. Step 5: Solve for x
    x = 154,638,389,701.96/375,072.88
  6. Step 6: Final answer
    x = 412,288.91

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1.5x scale

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.