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Finding the Fourth Proportional to 240,454.80, 331,798.77 and 138,513.60

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Solution

The fourth proportional to 240,454.80, 331,798.77 and 138,513.60 is: 191,132.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,454.80 : 331,798.77 = 138,513.60 : x
  2. Step 2: Convert to fraction form
    240,454.80/331,798.77 = 138,513.60/x
  3. Step 3: Cross multiply
    240,454.80x = 331,798.77 × 138,513.60
  4. Step 4: Simplify right side
    240,454.80x = 45,958,641,625.06
  5. Step 5: Solve for x
    x = 45,958,641,625.06/240,454.80
  6. Step 6: Final answer
    x = 191,132.15

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1.5x scale

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.