Home / 309,301.13-426,840.73-173,365.40

Finding the Fourth Proportional to 309,301.13, 426,840.73 and 173,365.40

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Solution

The fourth proportional to 309,301.13, 426,840.73 and 173,365.40 is: 239,247.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,301.13 : 426,840.73 = 173,365.40 : x
  2. Step 2: Convert to fraction form
    309,301.13/426,840.73 = 173,365.40/x
  3. Step 3: Cross multiply
    309,301.13x = 426,840.73 × 173,365.40
  4. Step 4: Simplify right side
    309,301.13x = 73,999,414,526.43
  5. Step 5: Solve for x
    x = 73,999,414,526.43/309,301.13
  6. Step 6: Final answer
    x = 239,247.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.