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Finding the Fourth Proportional to 218,944.69, 302,143.70 and 118,342.69

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Solution

The fourth proportional to 218,944.69, 302,143.70 and 118,342.69 is: 163,312.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,944.69 : 302,143.70 = 118,342.69 : x
  2. Step 2: Convert to fraction form
    218,944.69/302,143.70 = 118,342.69/x
  3. Step 3: Cross multiply
    218,944.69x = 302,143.70 × 118,342.69
  4. Step 4: Simplify right side
    218,944.69x = 35,756,497,765.05
  5. Step 5: Solve for x
    x = 35,756,497,765.05/218,944.69
  6. Step 6: Final answer
    x = 163,312.93

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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.