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Finding the Fourth Proportional to 203,315.60, 280,567.32 and 112,672.88

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Solution

The fourth proportional to 203,315.60, 280,567.32 and 112,672.88 is: 155,484.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,315.60 : 280,567.32 = 112,672.88 : x
  2. Step 2: Convert to fraction form
    203,315.60/280,567.32 = 112,672.88/x
  3. Step 3: Cross multiply
    203,315.60x = 280,567.32 × 112,672.88
  4. Step 4: Simplify right side
    203,315.60x = 31,612,327,978.28
  5. Step 5: Solve for x
    x = 31,612,327,978.28/203,315.60
  6. Step 6: Final answer
    x = 155,484.03

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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.