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Finding the Fourth Proportional to 208,910.66, 288,011.08 and 143,497.49

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Solution

The fourth proportional to 208,910.66, 288,011.08 and 143,497.49 is: 197,830.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,910.66 : 288,011.08 = 143,497.49 : x
  2. Step 2: Convert to fraction form
    208,910.66/288,011.08 = 143,497.49/x
  3. Step 3: Cross multiply
    208,910.66x = 288,011.08 × 143,497.49
  4. Step 4: Simplify right side
    208,910.66x = 41,328,865,993.42
  5. Step 5: Solve for x
    x = 41,328,865,993.42/208,910.66
  6. Step 6: Final answer
    x = 197,830.34

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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.