Home / 219,031.80-328,583.16-85,839.84

Finding the Fourth Proportional to 219,031.80, 328,583.16 and 85,839.84

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Solution

The fourth proportional to 219,031.80, 328,583.16 and 85,839.84 is: 128,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,031.80 : 328,583.16 = 85,839.84 : x
  2. Step 2: Convert to fraction form
    219,031.80/328,583.16 = 85,839.84/x
  3. Step 3: Cross multiply
    219,031.80x = 328,583.16 × 85,839.84
  4. Step 4: Simplify right side
    219,031.80x = 28,205,525,881.09
  5. Step 5: Solve for x
    x = 28,205,525,881.09/219,031.80
  6. Step 6: Final answer
    x = 128,773.66

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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.