Home / 288,340.09-397,920.58-159,285.22

Finding the Fourth Proportional to 288,340.09, 397,920.58 and 159,285.22

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Solution

The fourth proportional to 288,340.09, 397,920.58 and 159,285.22 is: 219,819.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,340.09 : 397,920.58 = 159,285.22 : x
  2. Step 2: Convert to fraction form
    288,340.09/397,920.58 = 159,285.22/x
  3. Step 3: Cross multiply
    288,340.09x = 397,920.58 × 159,285.22
  4. Step 4: Simplify right side
    288,340.09x = 63,382,865,734.81
  5. Step 5: Solve for x
    x = 63,382,865,734.81/288,340.09
  6. Step 6: Final answer
    x = 219,819.82

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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.