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Finding the Fourth Proportional to 203,303.79, 280,560.88 and 112,661.27

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Solution

The fourth proportional to 203,303.79, 280,560.88 and 112,661.27 is: 155,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,303.79 : 280,560.88 = 112,661.27 : x
  2. Step 2: Convert to fraction form
    203,303.79/280,560.88 = 112,661.27/x
  3. Step 3: Cross multiply
    203,303.79x = 280,560.88 × 112,661.27
  4. Step 4: Simplify right side
    203,303.79x = 31,608,345,053.12
  5. Step 5: Solve for x
    x = 31,608,345,053.12/203,303.79
  6. Step 6: Final answer
    x = 155,473.47

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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.