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Finding the Fourth Proportional to 208,890.55, 288,305.78 and 118,251.67

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Solution

The fourth proportional to 208,890.55, 288,305.78 and 118,251.67 is: 163,208.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,890.55 : 288,305.78 = 118,251.67 : x
  2. Step 2: Convert to fraction form
    208,890.55/288,305.78 = 118,251.67/x
  3. Step 3: Cross multiply
    208,890.55x = 288,305.78 × 118,251.67
  4. Step 4: Simplify right side
    208,890.55x = 34,092,639,955.65
  5. Step 5: Solve for x
    x = 34,092,639,955.65/208,890.55
  6. Step 6: Final answer
    x = 163,208.15

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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.