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Finding the Fourth Proportional to 373,817.10, 515,849.58 and 212,656.98

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Solution

The fourth proportional to 373,817.10, 515,849.58 and 212,656.98 is: 293,456.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,817.10 : 515,849.58 = 212,656.98 : x
  2. Step 2: Convert to fraction form
    373,817.10/515,849.58 = 212,656.98/x
  3. Step 3: Cross multiply
    373,817.10x = 515,849.58 × 212,656.98
  4. Step 4: Simplify right side
    373,817.10x = 109,699,013,817.07
  5. Step 5: Solve for x
    x = 109,699,013,817.07/373,817.10
  6. Step 6: Final answer
    x = 293,456.38

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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.