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Finding the Fourth Proportional to 388,809.56, 583,214.34 and 93,321.56

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Solution

The fourth proportional to 388,809.56, 583,214.34 and 93,321.56 is: 139,982.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,809.56 : 583,214.34 = 93,321.56 : x
  2. Step 2: Convert to fraction form
    388,809.56/583,214.34 = 93,321.56/x
  3. Step 3: Cross multiply
    388,809.56x = 583,214.34 × 93,321.56
  4. Step 4: Simplify right side
    388,809.56x = 54,426,473,831.16
  5. Step 5: Solve for x
    x = 54,426,473,831.16/388,809.56
  6. Step 6: Final answer
    x = 139,982.34

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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.