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Finding the Fourth Proportional to 310,383.66, 428,315.64 and 181,334.10

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Solution

The fourth proportional to 310,383.66, 428,315.64 and 181,334.10 is: 250,232.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,383.66 : 428,315.64 = 181,334.10 : x
  2. Step 2: Convert to fraction form
    310,383.66/428,315.64 = 181,334.10/x
  3. Step 3: Cross multiply
    310,383.66x = 428,315.64 × 181,334.10
  4. Step 4: Simplify right side
    310,383.66x = 77,668,231,095.32
  5. Step 5: Solve for x
    x = 77,668,231,095.32/310,383.66
  6. Step 6: Final answer
    x = 250,232.99

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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.