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Finding the Fourth Proportional to 245,125.43, 338,254.65 and 137,674.47

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Solution

The fourth proportional to 245,125.43, 338,254.65 and 137,674.47 is: 189,980.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,125.43 : 338,254.65 = 137,674.47 : x
  2. Step 2: Convert to fraction form
    245,125.43/338,254.65 = 137,674.47/x
  3. Step 3: Cross multiply
    245,125.43x = 338,254.65 × 137,674.47
  4. Step 4: Simplify right side
    245,125.43x = 46,569,029,663.79
  5. Step 5: Solve for x
    x = 46,569,029,663.79/245,125.43
  6. Step 6: Final answer
    x = 189,980.41

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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.