Home / 400,643.09-552,865.56-219,319.95

Finding the Fourth Proportional to 400,643.09, 552,865.56 and 219,319.95

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Solution

The fourth proportional to 400,643.09, 552,865.56 and 219,319.95 is: 302,649.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,643.09 : 552,865.56 = 219,319.95 : x
  2. Step 2: Convert to fraction form
    400,643.09/552,865.56 = 219,319.95/x
  3. Step 3: Cross multiply
    400,643.09x = 552,865.56 × 219,319.95
  4. Step 4: Simplify right side
    400,643.09x = 121,254,446,975.92
  5. Step 5: Solve for x
    x = 121,254,446,975.92/400,643.09
  6. Step 6: Final answer
    x = 302,649.54

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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.