Home / 219,186.32-328,701.72-78,907.28

Finding the Fourth Proportional to 219,186.32, 328,701.72 and 78,907.28

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Solution

The fourth proportional to 219,186.32, 328,701.72 and 78,907.28 is: 118,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,186.32 : 328,701.72 = 78,907.28 : x
  2. Step 2: Convert to fraction form
    219,186.32/328,701.72 = 78,907.28/x
  3. Step 3: Cross multiply
    219,186.32x = 328,701.72 × 78,907.28
  4. Step 4: Simplify right side
    219,186.32x = 25,936,958,656.52
  5. Step 5: Solve for x
    x = 25,936,958,656.52/219,186.32
  6. Step 6: Final answer
    x = 118,332.93

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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.