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Finding the Fourth Proportional to 203,415.23, 280,729.58 and 112,799.60

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Solution

The fourth proportional to 203,415.23, 280,729.58 and 112,799.60 is: 155,672.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,415.23 : 280,729.58 = 112,799.60 : x
  2. Step 2: Convert to fraction form
    203,415.23/280,729.58 = 112,799.60/x
  3. Step 3: Cross multiply
    203,415.23x = 280,729.58 × 112,799.60
  4. Step 4: Simplify right side
    203,415.23x = 31,666,182,364.52
  5. Step 5: Solve for x
    x = 31,666,182,364.52/203,415.23
  6. Step 6: Final answer
    x = 155,672.63

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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.