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Finding the Fourth Proportional to 373,566.84, 515,519.79 and 212,421.90

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Solution

The fourth proportional to 373,566.84, 515,519.79 and 212,421.90 is: 293,140.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,566.84 : 515,519.79 = 212,421.90 : x
  2. Step 2: Convert to fraction form
    373,566.84/515,519.79 = 212,421.90/x
  3. Step 3: Cross multiply
    373,566.84x = 515,519.79 × 212,421.90
  4. Step 4: Simplify right side
    373,566.84x = 109,507,693,279.40
  5. Step 5: Solve for x
    x = 109,507,693,279.40/373,566.84
  6. Step 6: Final answer
    x = 293,140.83

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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.