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Finding the Fourth Proportional to 215,090.99, 322,567.41 and 70,964.40

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Solution

The fourth proportional to 215,090.99, 322,567.41 and 70,964.40 is: 106,423.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,090.99 : 322,567.41 = 70,964.40 : x
  2. Step 2: Convert to fraction form
    215,090.99/322,567.41 = 70,964.40/x
  3. Step 3: Cross multiply
    215,090.99x = 322,567.41 × 70,964.40
  4. Step 4: Simplify right side
    215,090.99x = 22,890,804,185.95
  5. Step 5: Solve for x
    x = 22,890,804,185.95/215,090.99
  6. Step 6: Final answer
    x = 106,423.81

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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.