Home / 338,741.70-507,669.60-138,828.02

Finding the Fourth Proportional to 338,741.70, 507,669.60 and 138,828.02

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Solution

The fourth proportional to 338,741.70, 507,669.60 and 138,828.02 is: 208,060.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,741.70 : 507,669.60 = 138,828.02 : x
  2. Step 2: Convert to fraction form
    338,741.70/507,669.60 = 138,828.02/x
  3. Step 3: Cross multiply
    338,741.70x = 507,669.60 × 138,828.02
  4. Step 4: Simplify right side
    338,741.70x = 70,478,765,382.19
  5. Step 5: Solve for x
    x = 70,478,765,382.19/338,741.70
  6. Step 6: Final answer
    x = 208,060.49

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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.