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Finding the Fourth Proportional to 373,463.69, 515,423.45 and 212,342.87

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Solution

The fourth proportional to 373,463.69, 515,423.45 and 212,342.87 is: 293,057.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,463.69 : 515,423.45 = 212,342.87 : x
  2. Step 2: Convert to fraction form
    373,463.69/515,423.45 = 212,342.87/x
  3. Step 3: Cross multiply
    373,463.69x = 515,423.45 × 212,342.87
  4. Step 4: Simplify right side
    373,463.69x = 109,446,496,457.72
  5. Step 5: Solve for x
    x = 109,446,496,457.72/373,463.69
  6. Step 6: Final answer
    x = 293,057.94

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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.