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Finding the Fourth Proportional to 388,813.88, 583,220.82 and 93,325.88

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Solution

The fourth proportional to 388,813.88, 583,220.82 and 93,325.88 is: 139,988.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,813.88 : 583,220.82 = 93,325.88 : x
  2. Step 2: Convert to fraction form
    388,813.88/583,220.82 = 93,325.88/x
  3. Step 3: Cross multiply
    388,813.88x = 583,220.82 × 93,325.88
  4. Step 4: Simplify right side
    388,813.88x = 54,429,593,344.72
  5. Step 5: Solve for x
    x = 54,429,593,344.72/388,813.88
  6. Step 6: Final answer
    x = 139,988.81

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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.