Home / 400,788.56-553,088.21-219,500.92

Finding the Fourth Proportional to 400,788.56, 553,088.21 and 219,500.92

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Solution

The fourth proportional to 400,788.56, 553,088.21 and 219,500.92 is: 302,911.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,788.56 : 553,088.21 = 219,500.92 : x
  2. Step 2: Convert to fraction form
    400,788.56/553,088.21 = 219,500.92/x
  3. Step 3: Cross multiply
    400,788.56x = 553,088.21 × 219,500.92
  4. Step 4: Simplify right side
    400,788.56x = 121,403,370,936.15
  5. Step 5: Solve for x
    x = 121,403,370,936.15/400,788.56
  6. Step 6: Final answer
    x = 302,911.27

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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.