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Finding the Fourth Proportional to 275,494.16, 380,191.47 and 152,988.60

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Solution

The fourth proportional to 275,494.16, 380,191.47 and 152,988.60 is: 211,129.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,494.16 : 380,191.47 = 152,988.60 : x
  2. Step 2: Convert to fraction form
    275,494.16/380,191.47 = 152,988.60/x
  3. Step 3: Cross multiply
    275,494.16x = 380,191.47 × 152,988.60
  4. Step 4: Simplify right side
    275,494.16x = 58,164,961,579.25
  5. Step 5: Solve for x
    x = 58,164,961,579.25/275,494.16
  6. Step 6: Final answer
    x = 211,129.56

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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.