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Finding the Fourth Proportional to 304,635.60, 420,488.24 and 197,212.88

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Solution

The fourth proportional to 304,635.60, 420,488.24 and 197,212.88 is: 272,212.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,635.60 : 420,488.24 = 197,212.88 : x
  2. Step 2: Convert to fraction form
    304,635.60/420,488.24 = 197,212.88/x
  3. Step 3: Cross multiply
    304,635.60x = 420,488.24 × 197,212.88
  4. Step 4: Simplify right side
    304,635.60x = 82,925,696,881.69
  5. Step 5: Solve for x
    x = 82,925,696,881.69/304,635.60
  6. Step 6: Final answer
    x = 272,212.76

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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.