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Finding the Fourth Proportional to 230,950.32, 318,693.26 and 128,967.81

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Solution

The fourth proportional to 230,950.32, 318,693.26 and 128,967.81 is: 177,965.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,950.32 : 318,693.26 = 128,967.81 : x
  2. Step 2: Convert to fraction form
    230,950.32/318,693.26 = 128,967.81/x
  3. Step 3: Cross multiply
    230,950.32x = 318,693.26 × 128,967.81
  4. Step 4: Simplify right side
    230,950.32x = 41,101,171,159.12
  5. Step 5: Solve for x
    x = 41,101,171,159.12/230,950.32
  6. Step 6: Final answer
    x = 177,965.42

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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.