Home / 315,140.60-472,426.58-115,321.70

Finding the Fourth Proportional to 315,140.60, 472,426.58 and 115,321.70

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Solution

The fourth proportional to 315,140.60, 472,426.58 and 115,321.70 is: 172,878.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,140.60 : 472,426.58 = 115,321.70 : x
  2. Step 2: Convert to fraction form
    315,140.60/472,426.58 = 115,321.70/x
  3. Step 3: Cross multiply
    315,140.60x = 472,426.58 × 115,321.70
  4. Step 4: Simplify right side
    315,140.60x = 54,481,036,330.79
  5. Step 5: Solve for x
    x = 54,481,036,330.79/315,140.60
  6. Step 6: Final answer
    x = 172,878.51

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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.