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Finding the Fourth Proportional to 515,643.71, 773,486.28 and 245,633.04

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Solution

The fourth proportional to 515,643.71, 773,486.28 and 245,633.04 is: 368,459.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,643.71 : 773,486.28 = 245,633.04 : x
  2. Step 2: Convert to fraction form
    515,643.71/773,486.28 = 245,633.04/x
  3. Step 3: Cross multiply
    515,643.71x = 773,486.28 × 245,633.04
  4. Step 4: Simplify right side
    515,643.71x = 189,993,786,354.69
  5. Step 5: Solve for x
    x = 189,993,786,354.69/515,643.71
  6. Step 6: Final answer
    x = 368,459.43

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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.