Home / 265,186.24-397,778.88-78,328.96

Finding the Fourth Proportional to 265,186.24, 397,778.88 and 78,328.96

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Solution

The fourth proportional to 265,186.24, 397,778.88 and 78,328.96 is: 117,493.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,186.24 : 397,778.88 = 78,328.96 : x
  2. Step 2: Convert to fraction form
    265,186.24/397,778.88 = 78,328.96/x
  3. Step 3: Cross multiply
    265,186.24x = 397,778.88 × 78,328.96
  4. Step 4: Simplify right side
    265,186.24x = 31,157,605,980.36
  5. Step 5: Solve for x
    x = 31,157,605,980.36/265,186.24
  6. Step 6: Final answer
    x = 117,493.30

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1.5x scale

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.