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Finding the Fourth Proportional to 388,816.75, 583,225.13 and 93,328.75

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Solution

The fourth proportional to 388,816.75, 583,225.13 and 93,328.75 is: 139,993.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,816.75 : 583,225.13 = 93,328.75 : x
  2. Step 2: Convert to fraction form
    388,816.75/583,225.13 = 93,328.75/x
  3. Step 3: Cross multiply
    388,816.75x = 583,225.13 × 93,328.75
  4. Step 4: Simplify right side
    388,816.75x = 54,431,672,351.49
  5. Step 5: Solve for x
    x = 54,431,672,351.49/388,816.75
  6. Step 6: Final answer
    x = 139,993.13

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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.