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Finding the Fourth Proportional to 343,987.85, 474,928.06 and 223,472.61

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Solution

The fourth proportional to 343,987.85, 474,928.06 and 223,472.61 is: 308,538.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,987.85 : 474,928.06 = 223,472.61 : x
  2. Step 2: Convert to fraction form
    343,987.85/474,928.06 = 223,472.61/x
  3. Step 3: Cross multiply
    343,987.85x = 474,928.06 × 223,472.61
  4. Step 4: Simplify right side
    343,987.85x = 106,133,413,130.44
  5. Step 5: Solve for x
    x = 106,133,413,130.44/343,987.85
  6. Step 6: Final answer
    x = 308,538.26

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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.