Home / 393,420.15-589,985.64-140,632.43

Finding the Fourth Proportional to 393,420.15, 589,985.64 and 140,632.43

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Solution

The fourth proportional to 393,420.15, 589,985.64 and 140,632.43 is: 210,896.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,420.15 : 589,985.64 = 140,632.43 : x
  2. Step 2: Convert to fraction form
    393,420.15/589,985.64 = 140,632.43/x
  3. Step 3: Cross multiply
    393,420.15x = 589,985.64 × 140,632.43
  4. Step 4: Simplify right side
    393,420.15x = 82,971,111,268.38
  5. Step 5: Solve for x
    x = 82,971,111,268.38/393,420.15
  6. Step 6: Final answer
    x = 210,896.95

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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.