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Finding the Fourth Proportional to 203,191.94, 280,404.59 and 112,547.88

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Solution

The fourth proportional to 203,191.94, 280,404.59 and 112,547.88 is: 155,315.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,191.94 : 280,404.59 = 112,547.88 : x
  2. Step 2: Convert to fraction form
    203,191.94/280,404.59 = 112,547.88/x
  3. Step 3: Cross multiply
    203,191.94x = 280,404.59 × 112,547.88
  4. Step 4: Simplify right side
    203,191.94x = 31,558,941,584.03
  5. Step 5: Solve for x
    x = 31,558,941,584.03/203,191.94
  6. Step 6: Final answer
    x = 155,315.91

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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.