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Finding the Fourth Proportional to 245,859.30, 368,801.10 and 127,761.30

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Solution

The fourth proportional to 245,859.30, 368,801.10 and 127,761.30 is: 191,648.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,859.30 : 368,801.10 = 127,761.30 : x
  2. Step 2: Convert to fraction form
    245,859.30/368,801.10 = 127,761.30/x
  3. Step 3: Cross multiply
    245,859.30x = 368,801.10 × 127,761.30
  4. Step 4: Simplify right side
    245,859.30x = 47,118,507,977.43
  5. Step 5: Solve for x
    x = 47,118,507,977.43/245,859.30
  6. Step 6: Final answer
    x = 191,648.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.