Home / 315,133.38-472,628.08-90,492.03

Finding the Fourth Proportional to 315,133.38, 472,628.08 and 90,492.03

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Solution

The fourth proportional to 315,133.38, 472,628.08 and 90,492.03 is: 135,717.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,133.38 : 472,628.08 = 90,492.03 : x
  2. Step 2: Convert to fraction form
    315,133.38/472,628.08 = 90,492.03/x
  3. Step 3: Cross multiply
    315,133.38x = 472,628.08 × 90,492.03
  4. Step 4: Simplify right side
    315,133.38x = 42,769,074,167.97
  5. Step 5: Solve for x
    x = 42,769,074,167.97/315,133.38
  6. Step 6: Final answer
    x = 135,717.37

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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.