Home / 230,458.14-318,033.48-128,490

Finding the Fourth Proportional to 230,458.14, 318,033.48 and 128,490

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Solution

The fourth proportional to 230,458.14, 318,033.48 and 128,490 is: 177,316.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,458.14 : 318,033.48 = 128,490 : x
  2. Step 2: Convert to fraction form
    230,458.14/318,033.48 = 128,490/x
  3. Step 3: Cross multiply
    230,458.14x = 318,033.48 × 128,490
  4. Step 4: Simplify right side
    230,458.14x = 40,864,121,845.20
  5. Step 5: Solve for x
    x = 40,864,121,845.20/230,458.14
  6. Step 6: Final answer
    x = 177,316.90

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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.