Home / 265,830.04-398,766.66-78,841

Finding the Fourth Proportional to 265,830.04, 398,766.66 and 78,841

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Solution

The fourth proportional to 265,830.04, 398,766.66 and 78,841 is: 118,267.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,830.04 : 398,766.66 = 78,841 : x
  2. Step 2: Convert to fraction form
    265,830.04/398,766.66 = 78,841/x
  3. Step 3: Cross multiply
    265,830.04x = 398,766.66 × 78,841
  4. Step 4: Simplify right side
    265,830.04x = 31,439,162,241.06
  5. Step 5: Solve for x
    x = 31,439,162,241.06/265,830.04
  6. Step 6: Final answer
    x = 118,267.91

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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.