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Finding the Fourth Proportional to 230,039.60, 317,453.98 and 129,437.60

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Solution

The fourth proportional to 230,039.60, 317,453.98 and 129,437.60 is: 178,623.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,039.60 : 317,453.98 = 129,437.60 : x
  2. Step 2: Convert to fraction form
    230,039.60/317,453.98 = 129,437.60/x
  3. Step 3: Cross multiply
    230,039.60x = 317,453.98 × 129,437.60
  4. Step 4: Simplify right side
    230,039.60x = 41,090,481,281.65
  5. Step 5: Solve for x
    x = 41,090,481,281.65/230,039.60
  6. Step 6: Final answer
    x = 178,623.51

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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.