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Finding the Fourth Proportional to 401,987.73, 555,002.64 and 249,188.43

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Solution

The fourth proportional to 401,987.73, 555,002.64 and 249,188.43 is: 344,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,987.73 : 555,002.64 = 249,188.43 : x
  2. Step 2: Convert to fraction form
    401,987.73/555,002.64 = 249,188.43/x
  3. Step 3: Cross multiply
    401,987.73x = 555,002.64 × 249,188.43
  4. Step 4: Simplify right side
    401,987.73x = 138,300,236,507.46
  5. Step 5: Solve for x
    x = 138,300,236,507.46/401,987.73
  6. Step 6: Final answer
    x = 344,040.94

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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.