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Finding the Fourth Proportional to 230,892.20, 318,631.23 and 130,290.20

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Solution

The fourth proportional to 230,892.20, 318,631.23 and 130,290.20 is: 179,800.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,892.20 : 318,631.23 = 130,290.20 : x
  2. Step 2: Convert to fraction form
    230,892.20/318,631.23 = 130,290.20/x
  3. Step 3: Cross multiply
    230,892.20x = 318,631.23 × 130,290.20
  4. Step 4: Simplify right side
    230,892.20x = 41,514,525,089.79
  5. Step 5: Solve for x
    x = 41,514,525,089.79/230,892.20
  6. Step 6: Final answer
    x = 179,800.47

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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.