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Finding the Fourth Proportional to 373,115.99, 514,901.78 and 211,979.89

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Solution

The fourth proportional to 373,115.99, 514,901.78 and 211,979.89 is: 292,533.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,115.99 : 514,901.78 = 211,979.89 : x
  2. Step 2: Convert to fraction form
    373,115.99/514,901.78 = 211,979.89/x
  3. Step 3: Cross multiply
    373,115.99x = 514,901.78 × 211,979.89
  4. Step 4: Simplify right side
    373,115.99x = 109,148,822,685.20
  5. Step 5: Solve for x
    x = 109,148,822,685.20/373,115.99
  6. Step 6: Final answer
    x = 292,533.22

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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.