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Finding the Fourth Proportional to 321,237.74, 481,818.34 and 84,598.88

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Solution

The fourth proportional to 321,237.74, 481,818.34 and 84,598.88 is: 126,888.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,237.74 : 481,818.34 = 84,598.88 : x
  2. Step 2: Convert to fraction form
    321,237.74/481,818.34 = 84,598.88/x
  3. Step 3: Cross multiply
    321,237.74x = 481,818.34 × 84,598.88
  4. Step 4: Simplify right side
    321,237.74x = 40,761,291,927.46
  5. Step 5: Solve for x
    x = 40,761,291,927.46/321,237.74
  6. Step 6: Final answer
    x = 126,888.24

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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.