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Finding the Fourth Proportional to 218,930.51, 302,123.94 and 118,328.51

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Solution

The fourth proportional to 218,930.51, 302,123.94 and 118,328.51 is: 163,293.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,930.51 : 302,123.94 = 118,328.51 : x
  2. Step 2: Convert to fraction form
    218,930.51/302,123.94 = 118,328.51/x
  3. Step 3: Cross multiply
    218,930.51x = 302,123.94 × 118,328.51
  4. Step 4: Simplify right side
    218,930.51x = 35,749,874,144.91
  5. Step 5: Solve for x
    x = 35,749,874,144.91/218,930.51
  6. Step 6: Final answer
    x = 163,293.25

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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.