Home / 479,238.12-661,229.73-315,876.51

Finding the Fourth Proportional to 479,238.12, 661,229.73 and 315,876.51

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Solution

The fourth proportional to 479,238.12, 661,229.73 and 315,876.51 is: 435,831.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,238.12 : 661,229.73 = 315,876.51 : x
  2. Step 2: Convert to fraction form
    479,238.12/661,229.73 = 315,876.51/x
  3. Step 3: Cross multiply
    479,238.12x = 661,229.73 × 315,876.51
  4. Step 4: Simplify right side
    479,238.12x = 208,866,939,420.64
  5. Step 5: Solve for x
    x = 208,866,939,420.64/479,238.12
  6. Step 6: Final answer
    x = 435,831.23

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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.