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Finding the Fourth Proportional to 321,663.71, 482,259.11 and 153,302.31

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Solution

The fourth proportional to 321,663.71, 482,259.11 and 153,302.31 is: 229,840.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,663.71 : 482,259.11 = 153,302.31 : x
  2. Step 2: Convert to fraction form
    321,663.71/482,259.11 = 153,302.31/x
  3. Step 3: Cross multiply
    321,663.71x = 482,259.11 × 153,302.31
  4. Step 4: Simplify right side
    321,663.71x = 73,931,434,815.03
  5. Step 5: Solve for x
    x = 73,931,434,815.03/321,663.71
  6. Step 6: Final answer
    x = 229,840.77

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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.