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Finding the Fourth Proportional to 220,858.40, 331,384.80 and 102,468.80

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Solution

The fourth proportional to 220,858.40, 331,384.80 and 102,468.80 is: 153,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,858.40 : 331,384.80 = 102,468.80 : x
  2. Step 2: Convert to fraction form
    220,858.40/331,384.80 = 102,468.80/x
  3. Step 3: Cross multiply
    220,858.40x = 331,384.80 × 102,468.80
  4. Step 4: Simplify right side
    220,858.40x = 33,956,602,794.24
  5. Step 5: Solve for x
    x = 33,956,602,794.24/220,858.40
  6. Step 6: Final answer
    x = 153,748.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.