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Finding the Fourth Proportional to 203,346.99, 280,618.63 and 112,703.13

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Solution

The fourth proportional to 203,346.99, 280,618.63 and 112,703.13 is: 155,530.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,346.99 : 280,618.63 = 112,703.13 : x
  2. Step 2: Convert to fraction form
    203,346.99/280,618.63 = 112,703.13/x
  3. Step 3: Cross multiply
    203,346.99x = 280,618.63 × 112,703.13
  4. Step 4: Simplify right side
    203,346.99x = 31,626,597,655.55
  5. Step 5: Solve for x
    x = 31,626,597,655.55/203,346.99
  6. Step 6: Final answer
    x = 155,530.20

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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.