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Finding the Fourth Proportional to 321,711.52, 482,653.68 and 141,812.32

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Solution

The fourth proportional to 321,711.52, 482,653.68 and 141,812.32 is: 212,756.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,711.52 : 482,653.68 = 141,812.32 : x
  2. Step 2: Convert to fraction form
    321,711.52/482,653.68 = 141,812.32/x
  3. Step 3: Cross multiply
    321,711.52x = 482,653.68 × 141,812.32
  4. Step 4: Simplify right side
    321,711.52x = 68,446,238,117.34
  5. Step 5: Solve for x
    x = 68,446,238,117.34/321,711.52
  6. Step 6: Final answer
    x = 212,756.57

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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.