Home / 315,134.19-472,561.85-90,442.49

Finding the Fourth Proportional to 315,134.19, 472,561.85 and 90,442.49

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Solution

The fourth proportional to 315,134.19, 472,561.85 and 90,442.49 is: 135,623.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,134.19 : 472,561.85 = 90,442.49 : x
  2. Step 2: Convert to fraction form
    315,134.19/472,561.85 = 90,442.49/x
  3. Step 3: Cross multiply
    315,134.19x = 472,561.85 × 90,442.49
  4. Step 4: Simplify right side
    315,134.19x = 42,739,668,256.30
  5. Step 5: Solve for x
    x = 42,739,668,256.30/315,134.19
  6. Step 6: Final answer
    x = 135,623.71

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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.