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Finding the Fourth Proportional to 321,363.40, 482,045.10 and 238,419.40

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Solution

The fourth proportional to 321,363.40, 482,045.10 and 238,419.40 is: 357,629.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,363.40 : 482,045.10 = 238,419.40 : x
  2. Step 2: Convert to fraction form
    321,363.40/482,045.10 = 238,419.40/x
  3. Step 3: Cross multiply
    321,363.40x = 482,045.10 × 238,419.40
  4. Step 4: Simplify right side
    321,363.40x = 114,928,903,514.94
  5. Step 5: Solve for x
    x = 114,928,903,514.94/321,363.40
  6. Step 6: Final answer
    x = 357,629.10

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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.