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Finding the Fourth Proportional to 209,234.70, 288,742.68 and 118,607.76

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Solution

The fourth proportional to 209,234.70, 288,742.68 and 118,607.76 is: 163,678.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,234.70 : 288,742.68 = 118,607.76 : x
  2. Step 2: Convert to fraction form
    209,234.70/288,742.68 = 118,607.76/x
  3. Step 3: Cross multiply
    209,234.70x = 288,742.68 × 118,607.76
  4. Step 4: Simplify right side
    209,234.70x = 34,247,122,491.20
  5. Step 5: Solve for x
    x = 34,247,122,491.20/209,234.70
  6. Step 6: Final answer
    x = 163,678.03

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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.