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Finding the Fourth Proportional to 321,898.79, 482,858.31 and 153,437.42

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Solution

The fourth proportional to 321,898.79, 482,858.31 and 153,437.42 is: 230,160.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,898.79 : 482,858.31 = 153,437.42 : x
  2. Step 2: Convert to fraction form
    321,898.79/482,858.31 = 153,437.42/x
  3. Step 3: Cross multiply
    321,898.79x = 482,858.31 × 153,437.42
  4. Step 4: Simplify right side
    321,898.79x = 74,088,530,897.67
  5. Step 5: Solve for x
    x = 74,088,530,897.67/321,898.79
  6. Step 6: Final answer
    x = 230,160.95

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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.