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Finding the Fourth Proportional to 550,870.22, 760,215.97 and 309,167.77

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Solution

The fourth proportional to 550,870.22, 760,215.97 and 309,167.77 is: 426,659.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,870.22 : 760,215.97 = 309,167.77 : x
  2. Step 2: Convert to fraction form
    550,870.22/760,215.97 = 309,167.77/x
  3. Step 3: Cross multiply
    550,870.22x = 760,215.97 × 309,167.77
  4. Step 4: Simplify right side
    550,870.22x = 235,034,272,362.21
  5. Step 5: Solve for x
    x = 235,034,272,362.21/550,870.22
  6. Step 6: Final answer
    x = 426,659.98

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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.