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Finding the Fourth Proportional to 203,528.40, 280,882.80 and 112,913.16

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Solution

The fourth proportional to 203,528.40, 280,882.80 and 112,913.16 is: 155,827.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,528.40 : 280,882.80 = 112,913.16 : x
  2. Step 2: Convert to fraction form
    203,528.40/280,882.80 = 112,913.16/x
  3. Step 3: Cross multiply
    203,528.40x = 280,882.80 × 112,913.16
  4. Step 4: Simplify right side
    203,528.40x = 31,715,364,537.65
  5. Step 5: Solve for x
    x = 31,715,364,537.65/203,528.40
  6. Step 6: Final answer
    x = 155,827.71

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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.