Home / 338,237.28-507,355.56-138,558.02

Finding the Fourth Proportional to 338,237.28, 507,355.56 and 138,558.02

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Solution

The fourth proportional to 338,237.28, 507,355.56 and 138,558.02 is: 207,836.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,237.28 : 507,355.56 = 138,558.02 : x
  2. Step 2: Convert to fraction form
    338,237.28/507,355.56 = 138,558.02/x
  3. Step 3: Cross multiply
    338,237.28x = 507,355.56 × 138,558.02
  4. Step 4: Simplify right side
    338,237.28x = 70,298,179,292.81
  5. Step 5: Solve for x
    x = 70,298,179,292.81/338,237.28
  6. Step 6: Final answer
    x = 207,836.88

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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.