Home / 219,187.32-328,703.22-78,908.28

Finding the Fourth Proportional to 219,187.32, 328,703.22 and 78,908.28

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Solution

The fourth proportional to 219,187.32, 328,703.22 and 78,908.28 is: 118,334.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,187.32 : 328,703.22 = 78,908.28 : x
  2. Step 2: Convert to fraction form
    219,187.32/328,703.22 = 78,908.28/x
  3. Step 3: Cross multiply
    219,187.32x = 328,703.22 × 78,908.28
  4. Step 4: Simplify right side
    219,187.32x = 25,937,405,720.66
  5. Step 5: Solve for x
    x = 25,937,405,720.66/219,187.32
  6. Step 6: Final answer
    x = 118,334.43

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1.5x scale

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.