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Finding the Fourth Proportional to 275,746.85, 380,539.89 and 153,244.39

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Solution

The fourth proportional to 275,746.85, 380,539.89 and 153,244.39 is: 211,482.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,746.85 : 380,539.89 = 153,244.39 : x
  2. Step 2: Convert to fraction form
    275,746.85/380,539.89 = 153,244.39/x
  3. Step 3: Cross multiply
    275,746.85x = 380,539.89 × 153,244.39
  4. Step 4: Simplify right side
    275,746.85x = 58,315,603,075.88
  5. Step 5: Solve for x
    x = 58,315,603,075.88/275,746.85
  6. Step 6: Final answer
    x = 211,482.39

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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.