Home / 354,844.80-531,489.60-315,446.40

Finding the Fourth Proportional to 354,844.80, 531,489.60 and 315,446.40

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Solution

The fourth proportional to 354,844.80, 531,489.60 and 315,446.40 is: 472,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,844.80 : 531,489.60 = 315,446.40 : x
  2. Step 2: Convert to fraction form
    354,844.80/531,489.60 = 315,446.40/x
  3. Step 3: Cross multiply
    354,844.80x = 531,489.60 × 315,446.40
  4. Step 4: Simplify right side
    354,844.80x = 167,656,480,957.44
  5. Step 5: Solve for x
    x = 167,656,480,957.44/354,844.80
  6. Step 6: Final answer
    x = 472,478.34

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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.