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Finding the Fourth Proportional to 230,120.60, 317,565.78 and 129,518.60

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Solution

The fourth proportional to 230,120.60, 317,565.78 and 129,518.60 is: 178,735.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,120.60 : 317,565.78 = 129,518.60 : x
  2. Step 2: Convert to fraction form
    230,120.60/317,565.78 = 129,518.60/x
  3. Step 3: Cross multiply
    230,120.60x = 317,565.78 × 129,518.60
  4. Step 4: Simplify right side
    230,120.60x = 41,130,675,233.51
  5. Step 5: Solve for x
    x = 41,130,675,233.51/230,120.60
  6. Step 6: Final answer
    x = 178,735.30

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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.