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Finding the Fourth Proportional to 230,901.47, 318,559.74 and 135,389.65

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Solution

The fourth proportional to 230,901.47, 318,559.74 and 135,389.65 is: 186,788.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,901.47 : 318,559.74 = 135,389.65 : x
  2. Step 2: Convert to fraction form
    230,901.47/318,559.74 = 135,389.65/x
  3. Step 3: Cross multiply
    230,901.47x = 318,559.74 × 135,389.65
  4. Step 4: Simplify right side
    230,901.47x = 43,129,690,109.89
  5. Step 5: Solve for x
    x = 43,129,690,109.89/230,901.47
  6. Step 6: Final answer
    x = 186,788.29

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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.