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Finding the Fourth Proportional to 375,588.22, 518,808.63 and 279,928.84

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Solution

The fourth proportional to 375,588.22, 518,808.63 and 279,928.84 is: 386,672.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,588.22 : 518,808.63 = 279,928.84 : x
  2. Step 2: Convert to fraction form
    375,588.22/518,808.63 = 279,928.84/x
  3. Step 3: Cross multiply
    375,588.22x = 518,808.63 × 279,928.84
  4. Step 4: Simplify right side
    375,588.22x = 145,229,497,977.89
  5. Step 5: Solve for x
    x = 145,229,497,977.89/375,588.22
  6. Step 6: Final answer
    x = 386,672.13

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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.