Home / 343,639.24-515,335.26-118,938.68

Finding the Fourth Proportional to 343,639.24, 515,335.26 and 118,938.68

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Solution

The fourth proportional to 343,639.24, 515,335.26 and 118,938.68 is: 178,365.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,639.24 : 515,335.26 = 118,938.68 : x
  2. Step 2: Convert to fraction form
    343,639.24/515,335.26 = 118,938.68/x
  3. Step 3: Cross multiply
    343,639.24x = 515,335.26 × 118,938.68
  4. Step 4: Simplify right side
    343,639.24x = 61,293,295,581.86
  5. Step 5: Solve for x
    x = 61,293,295,581.86/343,639.24
  6. Step 6: Final answer
    x = 178,365.24

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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.