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Finding the Fourth Proportional to 321,347.94, 482,089.48 and 121,663.90

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Solution

The fourth proportional to 321,347.94, 482,089.48 and 121,663.90 is: 182,521.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,347.94 : 482,089.48 = 121,663.90 : x
  2. Step 2: Convert to fraction form
    321,347.94/482,089.48 = 121,663.90/x
  3. Step 3: Cross multiply
    321,347.94x = 482,089.48 × 121,663.90
  4. Step 4: Simplify right side
    321,347.94x = 58,652,886,285.77
  5. Step 5: Solve for x
    x = 58,652,886,285.77/321,347.94
  6. Step 6: Final answer
    x = 182,521.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.