Home / 287,022.07-430,158.75-178,906.78

Finding the Fourth Proportional to 287,022.07, 430,158.75 and 178,906.78

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Solution

The fourth proportional to 287,022.07, 430,158.75 and 178,906.78 is: 268,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,022.07 : 430,158.75 = 178,906.78 : x
  2. Step 2: Convert to fraction form
    287,022.07/430,158.75 = 178,906.78/x
  3. Step 3: Cross multiply
    287,022.07x = 430,158.75 × 178,906.78
  4. Step 4: Simplify right side
    287,022.07x = 76,958,316,851.33
  5. Step 5: Solve for x
    x = 76,958,316,851.33/287,022.07
  6. Step 6: Final answer
    x = 268,126.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.