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Finding the Fourth Proportional to 218,930.45, 302,124.53 and 118,328.45

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Solution

The fourth proportional to 218,930.45, 302,124.53 and 118,328.45 is: 163,293.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,930.45 : 302,124.53 = 118,328.45 : x
  2. Step 2: Convert to fraction form
    218,930.45/302,124.53 = 118,328.45/x
  3. Step 3: Cross multiply
    218,930.45x = 302,124.53 × 118,328.45
  4. Step 4: Simplify right side
    218,930.45x = 35,749,926,127.08
  5. Step 5: Solve for x
    x = 35,749,926,127.08/218,930.45
  6. Step 6: Final answer
    x = 163,293.53

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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.