Home / 400,806.18-553,120.86-219,525.72

Finding the Fourth Proportional to 400,806.18, 553,120.86 and 219,525.72

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Solution

The fourth proportional to 400,806.18, 553,120.86 and 219,525.72 is: 302,950.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,806.18 : 553,120.86 = 219,525.72 : x
  2. Step 2: Convert to fraction form
    400,806.18/553,120.86 = 219,525.72/x
  3. Step 3: Cross multiply
    400,806.18x = 553,120.86 × 219,525.72
  4. Step 4: Simplify right side
    400,806.18x = 121,424,255,038.52
  5. Step 5: Solve for x
    x = 121,424,255,038.52/400,806.18
  6. Step 6: Final answer
    x = 302,950.06

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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.