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Finding the Fourth Proportional to 245,363.19, 338,602.62 and 137,932.28

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Solution

The fourth proportional to 245,363.19, 338,602.62 and 137,932.28 is: 190,347.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,363.19 : 338,602.62 = 137,932.28 : x
  2. Step 2: Convert to fraction form
    245,363.19/338,602.62 = 137,932.28/x
  3. Step 3: Cross multiply
    245,363.19x = 338,602.62 × 137,932.28
  4. Step 4: Simplify right side
    245,363.19x = 46,704,232,754.33
  5. Step 5: Solve for x
    x = 46,704,232,754.33/245,363.19
  6. Step 6: Final answer
    x = 190,347.35

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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.