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Finding the Fourth Proportional to 310,270.19, 428,183.99 and 174,301.20

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Solution

The fourth proportional to 310,270.19, 428,183.99 and 174,301.20 is: 240,541.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,270.19 : 428,183.99 = 174,301.20 : x
  2. Step 2: Convert to fraction form
    310,270.19/428,183.99 = 174,301.20/x
  3. Step 3: Cross multiply
    310,270.19x = 428,183.99 × 174,301.20
  4. Step 4: Simplify right side
    310,270.19x = 74,632,982,406.28
  5. Step 5: Solve for x
    x = 74,632,982,406.28/310,270.19
  6. Step 6: Final answer
    x = 240,541.91

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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.