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Finding the Fourth Proportional to 219,238.40, 328,857.60 and 79,097.60

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Solution

The fourth proportional to 219,238.40, 328,857.60 and 79,097.60 is: 118,646.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,238.40 : 328,857.60 = 79,097.60 : x
  2. Step 2: Convert to fraction form
    219,238.40/328,857.60 = 79,097.60/x
  3. Step 3: Cross multiply
    219,238.40x = 328,857.60 × 79,097.60
  4. Step 4: Simplify right side
    219,238.40x = 26,011,846,901.76
  5. Step 5: Solve for x
    x = 26,011,846,901.76/219,238.40
  6. Step 6: Final answer
    x = 118,646.40

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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.