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Finding the Fourth Proportional to 341,790.40, 512,685.60 and 105,132.70

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Solution

The fourth proportional to 341,790.40, 512,685.60 and 105,132.70 is: 157,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,790.40 : 512,685.60 = 105,132.70 : x
  2. Step 2: Convert to fraction form
    341,790.40/512,685.60 = 105,132.70/x
  3. Step 3: Cross multiply
    341,790.40x = 512,685.60 × 105,132.70
  4. Step 4: Simplify right side
    341,790.40x = 53,900,021,379.12
  5. Step 5: Solve for x
    x = 53,900,021,379.12/341,790.40
  6. Step 6: Final answer
    x = 157,699.05

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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.