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Finding the Fourth Proportional to 218,849.45, 302,012.15 and 118,247.45

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Solution

The fourth proportional to 218,849.45, 302,012.15 and 118,247.45 is: 163,181.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,849.45 : 302,012.15 = 118,247.45 : x
  2. Step 2: Convert to fraction form
    218,849.45/302,012.15 = 118,247.45/x
  3. Step 3: Cross multiply
    218,849.45x = 302,012.15 × 118,247.45
  4. Step 4: Simplify right side
    218,849.45x = 35,712,164,505.22
  5. Step 5: Solve for x
    x = 35,712,164,505.22/218,849.45
  6. Step 6: Final answer
    x = 163,181.43

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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.