Home / 315,356.05-472,982.91-90,665.29

Finding the Fourth Proportional to 315,356.05, 472,982.91 and 90,665.29

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Solution

The fourth proportional to 315,356.05, 472,982.91 and 90,665.29 is: 135,983.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,356.05 : 472,982.91 = 90,665.29 : x
  2. Step 2: Convert to fraction form
    315,356.05/472,982.91 = 90,665.29/x
  3. Step 3: Cross multiply
    315,356.05x = 472,982.91 × 90,665.29
  4. Step 4: Simplify right side
    315,356.05x = 42,883,132,700.19
  5. Step 5: Solve for x
    x = 42,883,132,700.19/315,356.05
  6. Step 6: Final answer
    x = 135,983.22

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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.