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Finding the Fourth Proportional to 343,305.45, 514,980.81 and 118,687.59

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Solution

The fourth proportional to 343,305.45, 514,980.81 and 118,687.59 is: 178,039.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,305.45 : 514,980.81 = 118,687.59 : x
  2. Step 2: Convert to fraction form
    343,305.45/514,980.81 = 118,687.59/x
  3. Step 3: Cross multiply
    343,305.45x = 514,980.81 × 118,687.59
  4. Step 4: Simplify right side
    343,305.45x = 61,121,831,235.15
  5. Step 5: Solve for x
    x = 61,121,831,235.15/343,305.45
  6. Step 6: Final answer
    x = 178,039.21

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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.