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Finding the Fourth Proportional to 550,820.68, 760,137.80 and 321,521.02

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Solution

The fourth proportional to 550,820.68, 760,137.80 and 321,521.02 is: 443,702.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,820.68 : 760,137.80 = 321,521.02 : x
  2. Step 2: Convert to fraction form
    550,820.68/760,137.80 = 321,521.02/x
  3. Step 3: Cross multiply
    550,820.68x = 760,137.80 × 321,521.02
  4. Step 4: Simplify right side
    550,820.68x = 244,400,277,288.61
  5. Step 5: Solve for x
    x = 244,400,277,288.61/550,820.68
  6. Step 6: Final answer
    x = 443,702.07

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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.