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Finding the Fourth Proportional to 245,552, 338,878.88 and 138,132.32

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Solution

The fourth proportional to 245,552, 338,878.88 and 138,132.32 is: 190,632.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,552 : 338,878.88 = 138,132.32 : x
  2. Step 2: Convert to fraction form
    245,552/338,878.88 = 138,132.32/x
  3. Step 3: Cross multiply
    245,552x = 338,878.88 × 138,132.32
  4. Step 4: Simplify right side
    245,552x = 46,810,125,893.40
  5. Step 5: Solve for x
    x = 46,810,125,893.40/245,552
  6. Step 6: Final answer
    x = 190,632.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.