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Finding the Fourth Proportional to 315,337.05, 472,954.41 and 90,646.29

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Solution

The fourth proportional to 315,337.05, 472,954.41 and 90,646.29 is: 135,954.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,337.05 : 472,954.41 = 90,646.29 : x
  2. Step 2: Convert to fraction form
    315,337.05/472,954.41 = 90,646.29/x
  3. Step 3: Cross multiply
    315,337.05x = 472,954.41 × 90,646.29
  4. Step 4: Simplify right side
    315,337.05x = 42,871,562,605.64
  5. Step 5: Solve for x
    x = 42,871,562,605.64/315,337.05
  6. Step 6: Final answer
    x = 135,954.73

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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.