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Finding the Fourth Proportional to 372,655.81, 514,311.49 and 211,563.01

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Solution

The fourth proportional to 372,655.81, 514,311.49 and 211,563.01 is: 291,983.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    372,655.81 : 514,311.49 = 211,563.01 : x
  2. Step 2: Convert to fraction form
    372,655.81/514,311.49 = 211,563.01/x
  3. Step 3: Cross multiply
    372,655.81x = 514,311.49 × 211,563.01
  4. Step 4: Simplify right side
    372,655.81x = 108,809,286,901.99
  5. Step 5: Solve for x
    x = 108,809,286,901.99/372,655.81
  6. Step 6: Final answer
    x = 291,983.34

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.