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Finding the Fourth Proportional to 343,725.76, 515,465.61 and 119,025.87

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Solution

The fourth proportional to 343,725.76, 515,465.61 and 119,025.87 is: 178,496.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,725.76 : 515,465.61 = 119,025.87 : x
  2. Step 2: Convert to fraction form
    343,725.76/515,465.61 = 119,025.87/x
  3. Step 3: Cross multiply
    343,725.76x = 515,465.61 × 119,025.87
  4. Step 4: Simplify right side
    343,725.76x = 61,353,742,685.33
  5. Step 5: Solve for x
    x = 61,353,742,685.33/343,725.76
  6. Step 6: Final answer
    x = 178,496.20

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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.