Home / 315,357.05-472,984.41-90,666.29

Finding the Fourth Proportional to 315,357.05, 472,984.41 and 90,666.29

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Solution

The fourth proportional to 315,357.05, 472,984.41 and 90,666.29 is: 135,984.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,357.05 : 472,984.41 = 90,666.29 : x
  2. Step 2: Convert to fraction form
    315,357.05/472,984.41 = 90,666.29/x
  3. Step 3: Cross multiply
    315,357.05x = 472,984.41 × 90,666.29
  4. Step 4: Simplify right side
    315,357.05x = 42,883,741,682.54
  5. Step 5: Solve for x
    x = 42,883,741,682.54/315,357.05
  6. Step 6: Final answer
    x = 135,984.72

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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.