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Finding the Fourth Proportional to 280,174.31, 386,638.73 and 159,315.59

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Solution

The fourth proportional to 280,174.31, 386,638.73 and 159,315.59 is: 219,854.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,174.31 : 386,638.73 = 159,315.59 : x
  2. Step 2: Convert to fraction form
    280,174.31/386,638.73 = 159,315.59/x
  3. Step 3: Cross multiply
    280,174.31x = 386,638.73 × 159,315.59
  4. Step 4: Simplify right side
    280,174.31x = 61,597,575,453.61
  5. Step 5: Solve for x
    x = 61,597,575,453.61/280,174.31
  6. Step 6: Final answer
    x = 219,854.48

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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.