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Finding the Fourth Proportional to 254,291.40, 380,999.70 and 165,499.20

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Solution

The fourth proportional to 254,291.40, 380,999.70 and 165,499.20 is: 247,964.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,291.40 : 380,999.70 = 165,499.20 : x
  2. Step 2: Convert to fraction form
    254,291.40/380,999.70 = 165,499.20/x
  3. Step 3: Cross multiply
    254,291.40x = 380,999.70 × 165,499.20
  4. Step 4: Simplify right side
    254,291.40x = 63,055,145,550.24
  5. Step 5: Solve for x
    x = 63,055,145,550.24/254,291.40
  6. Step 6: Final answer
    x = 247,964.13

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1.5x scale

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.