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Finding the Fourth Proportional to 203,307.94, 280,538.40 and 112,659.54

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Solution

The fourth proportional to 203,307.94, 280,538.40 and 112,659.54 is: 155,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,307.94 : 280,538.40 = 112,659.54 : x
  2. Step 2: Convert to fraction form
    203,307.94/280,538.40 = 112,659.54/x
  3. Step 3: Cross multiply
    203,307.94x = 280,538.40 × 112,659.54
  4. Step 4: Simplify right side
    203,307.94x = 31,605,327,096.34
  5. Step 5: Solve for x
    x = 31,605,327,096.34/203,307.94
  6. Step 6: Final answer
    x = 155,455.45

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1.5x scale

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.