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Finding the Fourth Proportional to 323,330.40, 484,961.40 and 86,697

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Solution

The fourth proportional to 323,330.40, 484,961.40 and 86,697 is: 130,036.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,330.40 : 484,961.40 = 86,697 : x
  2. Step 2: Convert to fraction form
    323,330.40/484,961.40 = 86,697/x
  3. Step 3: Cross multiply
    323,330.40x = 484,961.40 × 86,697
  4. Step 4: Simplify right side
    323,330.40x = 42,044,698,495.80
  5. Step 5: Solve for x
    x = 42,044,698,495.80/323,330.40
  6. Step 6: Final answer
    x = 130,036.33

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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.