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Finding the Fourth Proportional to 338,645.71, 507,968.55 and 113,987.32

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Solution

The fourth proportional to 338,645.71, 507,968.55 and 113,987.32 is: 170,980.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,645.71 : 507,968.55 = 113,987.32 : x
  2. Step 2: Convert to fraction form
    338,645.71/507,968.55 = 113,987.32/x
  3. Step 3: Cross multiply
    338,645.71x = 507,968.55 × 113,987.32
  4. Step 4: Simplify right side
    338,645.71x = 57,901,972,388.86
  5. Step 5: Solve for x
    x = 57,901,972,388.86/338,645.71
  6. Step 6: Final answer
    x = 170,980.97

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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.