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Finding the Fourth Proportional to 343,155.90, 515,025.45 and 276,671.10

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Solution

The fourth proportional to 343,155.90, 515,025.45 and 276,671.10 is: 415,241.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,155.90 : 515,025.45 = 276,671.10 : x
  2. Step 2: Convert to fraction form
    343,155.90/515,025.45 = 276,671.10/x
  3. Step 3: Cross multiply
    343,155.90x = 515,025.45 × 276,671.10
  4. Step 4: Simplify right side
    343,155.90x = 142,492,657,779.50
  5. Step 5: Solve for x
    x = 142,492,657,779.50/343,155.90
  6. Step 6: Final answer
    x = 415,241.75

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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.