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Finding the Fourth Proportional to 230,041.58, 317,449.60 and 129,420.14

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Solution

The fourth proportional to 230,041.58, 317,449.60 and 129,420.14 is: 178,595.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,041.58 : 317,449.60 = 129,420.14 : x
  2. Step 2: Convert to fraction form
    230,041.58/317,449.60 = 129,420.14/x
  3. Step 3: Cross multiply
    230,041.58x = 317,449.60 × 129,420.14
  4. Step 4: Simplify right side
    230,041.58x = 41,084,369,764.15
  5. Step 5: Solve for x
    x = 41,084,369,764.15/230,041.58
  6. Step 6: Final answer
    x = 178,595.41

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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.