Home / 393,143.51-542,535.30-223,377.64

Finding the Fourth Proportional to 393,143.51, 542,535.30 and 223,377.64

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Solution

The fourth proportional to 393,143.51, 542,535.30 and 223,377.64 is: 308,259.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,143.51 : 542,535.30 = 223,377.64 : x
  2. Step 2: Convert to fraction form
    393,143.51/542,535.30 = 223,377.64/x
  3. Step 3: Cross multiply
    393,143.51x = 542,535.30 × 223,377.64
  4. Step 4: Simplify right side
    393,143.51x = 121,190,252,340.23
  5. Step 5: Solve for x
    x = 121,190,252,340.23/393,143.51
  6. Step 6: Final answer
    x = 308,259.58

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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.