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Finding the Fourth Proportional to 220,883.21, 304,810.46 and 134,985.85

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Solution

The fourth proportional to 220,883.21, 304,810.46 and 134,985.85 is: 186,275.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,883.21 : 304,810.46 = 134,985.85 : x
  2. Step 2: Convert to fraction form
    220,883.21/304,810.46 = 134,985.85/x
  3. Step 3: Cross multiply
    220,883.21x = 304,810.46 × 134,985.85
  4. Step 4: Simplify right side
    220,883.21x = 41,145,098,101.23
  5. Step 5: Solve for x
    x = 41,145,098,101.23/220,883.21
  6. Step 6: Final answer
    x = 186,275.35

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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.