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Finding the Fourth Proportional to 249,413, 344,190 and 136,235.72

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Solution

The fourth proportional to 249,413, 344,190 and 136,235.72 is: 188,005.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,413 : 344,190 = 136,235.72 : x
  2. Step 2: Convert to fraction form
    249,413/344,190 = 136,235.72/x
  3. Step 3: Cross multiply
    249,413x = 344,190 × 136,235.72
  4. Step 4: Simplify right side
    249,413x = 46,890,972,466.80
  5. Step 5: Solve for x
    x = 46,890,972,466.80/249,413
  6. Step 6: Final answer
    x = 188,005.33

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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.