Home / 265,733.28-398,601.36-78,746.40

Finding the Fourth Proportional to 265,733.28, 398,601.36 and 78,746.40

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Solution

The fourth proportional to 265,733.28, 398,601.36 and 78,746.40 is: 118,120.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,733.28 : 398,601.36 = 78,746.40 : x
  2. Step 2: Convert to fraction form
    265,733.28/398,601.36 = 78,746.40/x
  3. Step 3: Cross multiply
    265,733.28x = 398,601.36 × 78,746.40
  4. Step 4: Simplify right side
    265,733.28x = 31,388,422,135.10
  5. Step 5: Solve for x
    x = 31,388,422,135.10/265,733.28
  6. Step 6: Final answer
    x = 118,120.03

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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.