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Finding the Fourth Proportional to 230,808.02, 318,568.21 and 135,345.47

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Solution

The fourth proportional to 230,808.02, 318,568.21 and 135,345.47 is: 186,807.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,808.02 : 318,568.21 = 135,345.47 : x
  2. Step 2: Convert to fraction form
    230,808.02/318,568.21 = 135,345.47/x
  3. Step 3: Cross multiply
    230,808.02x = 318,568.21 × 135,345.47
  4. Step 4: Simplify right side
    230,808.02x = 43,116,763,432.78
  5. Step 5: Solve for x
    x = 43,116,763,432.78/230,808.02
  6. Step 6: Final answer
    x = 186,807.91

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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.