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Finding the Fourth Proportional to 621,867.84, 932,860.08 and 247,920

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Solution

The fourth proportional to 621,867.84, 932,860.08 and 247,920 is: 371,903.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,867.84 : 932,860.08 = 247,920 : x
  2. Step 2: Convert to fraction form
    621,867.84/932,860.08 = 247,920/x
  3. Step 3: Cross multiply
    621,867.84x = 932,860.08 × 247,920
  4. Step 4: Simplify right side
    621,867.84x = 231,274,671,033.60
  5. Step 5: Solve for x
    x = 231,274,671,033.60/621,867.84
  6. Step 6: Final answer
    x = 371,903.25

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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.