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Finding the Fourth Proportional to 372,663.57, 514,249.79 and 211,521.90

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Solution

The fourth proportional to 372,663.57, 514,249.79 and 211,521.90 is: 291,885.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,663.57 : 514,249.79 = 211,521.90 : x
  2. Step 2: Convert to fraction form
    372,663.57/514,249.79 = 211,521.90/x
  3. Step 3: Cross multiply
    372,663.57x = 514,249.79 × 211,521.90
  4. Step 4: Simplify right side
    372,663.57x = 108,775,091,597.79
  5. Step 5: Solve for x
    x = 108,775,091,597.79/372,663.57
  6. Step 6: Final answer
    x = 291,885.50

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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.