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Finding the Fourth Proportional to 356,987.40, 492,638.40 and 195,843.66

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Solution

The fourth proportional to 356,987.40, 492,638.40 and 195,843.66 is: 270,261.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,987.40 : 492,638.40 = 195,843.66 : x
  2. Step 2: Convert to fraction form
    356,987.40/492,638.40 = 195,843.66/x
  3. Step 3: Cross multiply
    356,987.40x = 492,638.40 × 195,843.66
  4. Step 4: Simplify right side
    356,987.40x = 96,480,107,312.54
  5. Step 5: Solve for x
    x = 96,480,107,312.54/356,987.40
  6. Step 6: Final answer
    x = 270,261.94

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1.5x scale

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.