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Finding the Fourth Proportional to 323,118.24, 484,642.98 and 86,484.84

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Solution

The fourth proportional to 323,118.24, 484,642.98 and 86,484.84 is: 129,718.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,118.24 : 484,642.98 = 86,484.84 : x
  2. Step 2: Convert to fraction form
    323,118.24/484,642.98 = 86,484.84/x
  3. Step 3: Cross multiply
    323,118.24x = 484,642.98 × 86,484.84
  4. Step 4: Simplify right side
    323,118.24x = 41,914,270,582.42
  5. Step 5: Solve for x
    x = 41,914,270,582.42/323,118.24
  6. Step 6: Final answer
    x = 129,718.06

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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.