Home / 400,819.98-553,111.84-219,532.71

Finding the Fourth Proportional to 400,819.98, 553,111.84 and 219,532.71

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Solution

The fourth proportional to 400,819.98, 553,111.84 and 219,532.71 is: 302,944.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,819.98 : 553,111.84 = 219,532.71 : x
  2. Step 2: Convert to fraction form
    400,819.98/553,111.84 = 219,532.71/x
  3. Step 3: Cross multiply
    400,819.98x = 553,111.84 × 219,532.71
  4. Step 4: Simplify right side
    400,819.98x = 121,426,140,619.46
  5. Step 5: Solve for x
    x = 121,426,140,619.46/400,819.98
  6. Step 6: Final answer
    x = 302,944.33

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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.