Home / 219,026.25-328,413.61-85,750.47

Finding the Fourth Proportional to 219,026.25, 328,413.61 and 85,750.47

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Solution

The fourth proportional to 219,026.25, 328,413.61 and 85,750.47 is: 128,576.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,026.25 : 328,413.61 = 85,750.47 : x
  2. Step 2: Convert to fraction form
    219,026.25/328,413.61 = 85,750.47/x
  3. Step 3: Cross multiply
    219,026.25x = 328,413.61 × 85,750.47
  4. Step 4: Simplify right side
    219,026.25x = 28,161,621,411.90
  5. Step 5: Solve for x
    x = 28,161,621,411.90/219,026.25
  6. Step 6: Final answer
    x = 128,576.47

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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.