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Finding the Fourth Proportional to 220,931.51, 304,876.76 and 135,034.38

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Solution

The fourth proportional to 220,931.51, 304,876.76 and 135,034.38 is: 186,342.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,931.51 : 304,876.76 = 135,034.38 : x
  2. Step 2: Convert to fraction form
    220,931.51/304,876.76 = 135,034.38/x
  3. Step 3: Cross multiply
    220,931.51x = 304,876.76 × 135,034.38
  4. Step 4: Simplify right side
    220,931.51x = 41,168,843,587.84
  5. Step 5: Solve for x
    x = 41,168,843,587.84/220,931.51
  6. Step 6: Final answer
    x = 186,342.11

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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.