Home / 219,003.75-328,541.16-85,811.81

Finding the Fourth Proportional to 219,003.75, 328,541.16 and 85,811.81

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Solution

The fourth proportional to 219,003.75, 328,541.16 and 85,811.81 is: 128,731.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,003.75 : 328,541.16 = 85,811.81 : x
  2. Step 2: Convert to fraction form
    219,003.75/328,541.16 = 85,811.81/x
  3. Step 3: Cross multiply
    219,003.75x = 328,541.16 × 85,811.81
  4. Step 4: Simplify right side
    219,003.75x = 28,192,710,278.19
  5. Step 5: Solve for x
    x = 28,192,710,278.19/219,003.75
  6. Step 6: Final answer
    x = 128,731.63

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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.