Home / 145,391.28-218,091.24-40,218

Finding the Fourth Proportional to 145,391.28, 218,091.24 and 40,218

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Solution

The fourth proportional to 145,391.28, 218,091.24 and 40,218 is: 60,328.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,391.28 : 218,091.24 = 40,218 : x
  2. Step 2: Convert to fraction form
    145,391.28/218,091.24 = 40,218/x
  3. Step 3: Cross multiply
    145,391.28x = 218,091.24 × 40,218
  4. Step 4: Simplify right side
    145,391.28x = 8,771,193,490.32
  5. Step 5: Solve for x
    x = 8,771,193,490.32/145,391.28
  6. Step 6: Final answer
    x = 60,328.19

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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.