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Finding the Fourth Proportional to 219,920.40, 303,493.68 and 119,318.40

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Solution

The fourth proportional to 219,920.40, 303,493.68 and 119,318.40 is: 164,661.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,920.40 : 303,493.68 = 119,318.40 : x
  2. Step 2: Convert to fraction form
    219,920.40/303,493.68 = 119,318.40/x
  3. Step 3: Cross multiply
    219,920.40x = 303,493.68 × 119,318.40
  4. Step 4: Simplify right side
    219,920.40x = 36,212,380,307.71
  5. Step 5: Solve for x
    x = 36,212,380,307.71/219,920.40
  6. Step 6: Final answer
    x = 164,661.31

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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.