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Finding the Fourth Proportional to 230,745.16, 318,428.58 and 130,143.16

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Solution

The fourth proportional to 230,745.16, 318,428.58 and 130,143.16 is: 179,597.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,745.16 : 318,428.58 = 130,143.16 : x
  2. Step 2: Convert to fraction form
    230,745.16/318,428.58 = 130,143.16/x
  3. Step 3: Cross multiply
    230,745.16x = 318,428.58 × 130,143.16
  4. Step 4: Simplify right side
    230,745.16x = 41,441,301,635.51
  5. Step 5: Solve for x
    x = 41,441,301,635.51/230,745.16
  6. Step 6: Final answer
    x = 179,597.71

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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.