Home / 259,582.32-389,142.06-139,703.64

Finding the Fourth Proportional to 259,582.32, 389,142.06 and 139,703.64

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Solution

The fourth proportional to 259,582.32, 389,142.06 and 139,703.64 is: 209,430.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,582.32 : 389,142.06 = 139,703.64 : x
  2. Step 2: Convert to fraction form
    259,582.32/389,142.06 = 139,703.64/x
  3. Step 3: Cross multiply
    259,582.32x = 389,142.06 × 139,703.64
  4. Step 4: Simplify right side
    259,582.32x = 54,364,562,259.10
  5. Step 5: Solve for x
    x = 54,364,562,259.10/259,582.32
  6. Step 6: Final answer
    x = 209,430.91

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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.