Home / 287,961.30-397,364.69-158,904.92

Finding the Fourth Proportional to 287,961.30, 397,364.69 and 158,904.92

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Solution

The fourth proportional to 287,961.30, 397,364.69 and 158,904.92 is: 219,276.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,961.30 : 397,364.69 = 158,904.92 : x
  2. Step 2: Convert to fraction form
    287,961.30/397,364.69 = 158,904.92/x
  3. Step 3: Cross multiply
    287,961.30x = 397,364.69 × 158,904.92
  4. Step 4: Simplify right side
    287,961.30x = 63,143,205,665.95
  5. Step 5: Solve for x
    x = 63,143,205,665.95/287,961.30
  6. Step 6: Final answer
    x = 219,276.71

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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.