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Finding the Fourth Proportional to 324,869.84, 487,729.20 and 260,862.16

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Solution

The fourth proportional to 324,869.84, 487,729.20 and 260,862.16 is: 391,634.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,869.84 : 487,729.20 = 260,862.16 : x
  2. Step 2: Convert to fraction form
    324,869.84/487,729.20 = 260,862.16/x
  3. Step 3: Cross multiply
    324,869.84x = 487,729.20 × 260,862.16
  4. Step 4: Simplify right side
    324,869.84x = 127,230,092,607.07
  5. Step 5: Solve for x
    x = 127,230,092,607.07/324,869.84
  6. Step 6: Final answer
    x = 391,634.05

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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.