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Finding the Fourth Proportional to 220,932.50, 304,886.86 and 120,330.50

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Solution

The fourth proportional to 220,932.50, 304,886.86 and 120,330.50 is: 166,056.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,932.50 : 304,886.86 = 120,330.50 : x
  2. Step 2: Convert to fraction form
    220,932.50/304,886.86 = 120,330.50/x
  3. Step 3: Cross multiply
    220,932.50x = 304,886.86 × 120,330.50
  4. Step 4: Simplify right side
    220,932.50x = 36,687,188,307.23
  5. Step 5: Solve for x
    x = 36,687,188,307.23/220,932.50
  6. Step 6: Final answer
    x = 166,056.10

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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.