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Finding the Fourth Proportional to 388,976.22, 583,685.64 and 310,588.56

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Solution

The fourth proportional to 388,976.22, 583,685.64 and 310,588.56 is: 466,059.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,976.22 : 583,685.64 = 310,588.56 : x
  2. Step 2: Convert to fraction form
    388,976.22/583,685.64 = 310,588.56/x
  3. Step 3: Cross multiply
    388,976.22x = 583,685.64 × 310,588.56
  4. Step 4: Simplify right side
    388,976.22x = 181,286,082,420.28
  5. Step 5: Solve for x
    x = 181,286,082,420.28/388,976.22
  6. Step 6: Final answer
    x = 466,059.55

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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.