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Finding the Fourth Proportional to 245,527.61, 338,824.82 and 138,097.58

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Solution

The fourth proportional to 245,527.61, 338,824.82 and 138,097.58 is: 190,572.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,527.61 : 338,824.82 = 138,097.58 : x
  2. Step 2: Convert to fraction form
    245,527.61/338,824.82 = 138,097.58/x
  3. Step 3: Cross multiply
    245,527.61x = 338,824.82 × 138,097.58
  4. Step 4: Simplify right side
    245,527.61x = 46,790,886,337.06
  5. Step 5: Solve for x
    x = 46,790,886,337.06/245,527.61
  6. Step 6: Final answer
    x = 190,572.81

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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.