Home / 265,767.24-398,582.82-78,735

Finding the Fourth Proportional to 265,767.24, 398,582.82 and 78,735

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Solution

The fourth proportional to 265,767.24, 398,582.82 and 78,735 is: 118,082.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,767.24 : 398,582.82 = 78,735 : x
  2. Step 2: Convert to fraction form
    265,767.24/398,582.82 = 78,735/x
  3. Step 3: Cross multiply
    265,767.24x = 398,582.82 × 78,735
  4. Step 4: Simplify right side
    265,767.24x = 31,382,418,332.70
  5. Step 5: Solve for x
    x = 31,382,418,332.70/265,767.24
  6. Step 6: Final answer
    x = 118,082.34

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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.