Home / 398,330.56-597,627.36-145,688.32

Finding the Fourth Proportional to 398,330.56, 597,627.36 and 145,688.32

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Solution

The fourth proportional to 398,330.56, 597,627.36 and 145,688.32 is: 218,580.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,330.56 : 597,627.36 = 145,688.32 : x
  2. Step 2: Convert to fraction form
    398,330.56/597,627.36 = 145,688.32/x
  3. Step 3: Cross multiply
    398,330.56x = 597,627.36 × 145,688.32
  4. Step 4: Simplify right side
    398,330.56x = 87,067,326,064.44
  5. Step 5: Solve for x
    x = 87,067,326,064.44/398,330.56
  6. Step 6: Final answer
    x = 218,580.58

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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.